Untitled Document<\/title>\n<\/head>\n\n<body>\n<div style=\"text-align:justify; padding:10px; background:#eee\"> <p style=\"padding:10px 5px 15px 5px; margin-bottom:0\"> <strong>Summary: <\/strong>In this blog, we\u2019ll share a variety of alternative methods to repair your Mac external hard drive in case Disk Utility fails to fix the drive.<br><br>\nDownload the free-to-try Mac data recovery tool to recover data from an external hard drive.\n<br><br>\n\n<a href=\"https:\/\/cloud.stellarinfo.com\/micro\/StellarDataRecoveryProfessional.dmg.zip\" style=\"display:block; text-align:center; margin:auto\"><img src=\"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-content\/uploads\/2021\/02\/Free-Download-Mac-Blue-button.png\" alt=\"Free-Download-Mac\" class=\"wp-image-41518\" align=\"center\"><\/a><\/p>\n\n <\/div>\n<\/body>\n<\/html>\n\n\n\n<br><h4><strong>Table of Content<\/strong><\/h4>\n\n\n\n<strong>1<\/strong>. <a href=\"#First_Point_Header\"><span style=\"text-decoration: underline;\">Use FSCK Command in Terminal to Repair External Hard Drive<\/span><\/a><br>\n\n<strong>2<\/strong>. <a href=\"#Second_Point_Header\"><span style=\"text-decoration: underline;\">Use FSCK Command in Single-User Mode to Fix External Drive<\/span><\/a><br>\n\n<strong>3<\/strong>. <a href=\"#Third_Point_Header\"><span style=\"text-decoration: underline;\">Recover Inaccessible Data Using Mac Data Recovery Software<\/span><\/a>\n\n\n\n<br><br>Disk Utility is a useful storage drive management software that allows you to perform the external hard drive repair task with ease by using First Aid. But sometimes, Disk Utility\u2019s First Aid fails to repair your external hard drive and the drive\u2019s data remains inaccessible. Don\u2019t worry, you can use alternative methods to repair your Mac external hard drive in case Disk Utility doesn\u2019t work. Also, you can recover data from a corrupt external drive on Mac. <\/p><\/p>\n\n\n\n<p>But before learning the repair and\nrecovery methods, know why a Mac external hard drive turns inaccessible, appreciate\nthe Mac file system and its importance, and learn the reasons that lead to file\nsystem corruption.<\/p>\n\n\n\n<h3><strong>Why Mac External Hard Drive Turns\nInaccessible?<\/strong><\/h3>\n\n\n\n<p>At times, an unexpected event\ncorrupts the partition table, EFI partition, or APFS\/HFS file system of the Mac\nexternal storage drive. This logical damage of the external hard drive makes\nthe drive and its stored data inaccessible on Mac.<\/p>\n\n\n\n<h3><strong>Mac File System and Its Importance<\/strong><\/h3>\n\n\n\n<p>Your Mac external hard drive contains\nreserved space for GUID Partition Table, EFI System Partition, and APFS\nContainer. The APFS container comprises Container superblock, Checkpoint area,\nSpace manager area, and storage for objects and file data. The container can\nhave multiple volumes with their file systems. The Mac\u2019s file system allows\nstorage and retrieval of data to and from the storage drive.<\/p>\n\n\n\n<h2><strong>Reasons for File System Corruption<\/strong><\/h2>\n\n\n\n<p>The following situations may damage\nthe storage drive\u2019s file system, which may not get fixed with Disk Utility\u2019s\nFirst Aid feature:<\/p>\n\n\n\n<ul><li>An application may write into the\nfile system thereby causing corruption on the disk.<\/li><li>If the block containing the file\nsystem of the drive turns bad, then the storage drive fails.<\/li><li>A malware on Mac may write on the\nfile system space, thus crippling drive access. <\/li><\/ul>\n\n\n\n<p>Few reasons for corruption of legacy\nfile-system formatted storage drive are as follows:<\/p>\n\n\n\n<ul><li>A macOS crash or abrupt power cut\nresults in non-syncing of information to the file system, which results in its\ncorruption.<\/li><li>The sudden removal of an external\nstorage drive without proper un-mounting may result in an incomplete write\noperation and corruption.<\/li><li>If the external storage drive does\nnot un-mount due to running programs that are accessing the drive, forced\nejection can corrupt its file system.<\/li><\/ul>\n\n\n\n<p>The next sections describe numerous methods\nto repair Mac storage drive without Disk Utility.<\/p>\n\n\n\n<h4 id=\"First_Point_Header\" style=\"text-align: left; background-color: #d1e4ff; border: 1px dotted #D1E4FF; padding: 30px 30px;\"><strong>1. Use FSCK Command in Terminal to Repair External Hard Drive<\/strong><\/h4>\n\n\n\n<p>When Disk Utility\u2019s First Aid can\u2019t fix\nthe file system corruption issue on your Mac external hard drive, run the fsck (file\nsystem consistency check) command in the macOS Terminal. <\/p>\n\n\n\n<p>Steps to repair Mac external hard\ndrive by using Terminal are as follows:<\/p>\n\n\n\n<ol><li>Go to <strong>Finder<\/strong> > <strong>Applications<\/strong> > <strong>Utilities<\/strong> > <strong>Terminal<\/strong>.<\/li><li>In the Terminal window, type <strong>df \u2013h<\/strong> and hit <strong>Return<\/strong>. Note down the file system identifier of the external hard drive, say <strong>\/dev\/disk4s1<\/strong>.<\/li><li>Type <strong>unmount \/dev\/disk4s1<\/strong> and hit <strong>Return<\/strong>. This command unmounts the external drive.<\/li><li>Type <strong>fsck_hfs -y \/dev\/disk4s1<\/strong> and hit <strong>Return<\/strong>. The fsck_hfs verifies and repairs hfs containers and volumes. If the external storage drive is in the apfs format, use fsck_apfs instead of fsck_hfs. The parameter -y repairs any damage that is found.<\/li><li>If you receive the message \u201cFile system was modified\u201d, re-run the above fsck command. <\/li><li>Use the fsck command again until it says, \u201cThe volume appears to be OK.\u201d<\/li><\/ol>\n\n\n\n<p class=\"has-background has-very-light-gray-background-color\"><strong>Also Read: <\/strong><a rel=\"noreferrer noopener\" href=\"https:\/\/www.macintosh-data-recovery.com\/blog\/top-5-mac-hard-disk-drive-repair-software\/\" target=\"_blank\"><strong>List of Top 5 Mac Hard Disk Drive Repair Software<\/strong><\/a><\/p>\n\n\n\n<h4 id=\"Second_Point_Header\" style=\"text-align: left; background-color: #d1e4ff; border: 1px dotted #D1E4FF; padding: 30px 30px;\"><strong>2. Use FSCK Command in Single-User Mode to Fix External Drive<\/strong><\/h4>\n\n\n\n<p>Use the fsck command in the single-user\nmode to repair the file system corruption issue on your Mac external hard drive.\n<\/p>\n\n\n\n<p>Steps to repair Mac external hard\ndrive by using single-user mode are as follows:<\/p>\n\n\n\n<ol><li>Start or restart your Mac then\npromptly press and hold <strong>Command<\/strong> + <strong>S<\/strong> keys.<\/li><li>Release the keys once you see white\ntext. Your Mac boots into single-user mode.<\/li><li>On the prompt, type <strong>fsck_hfs \u2013y \/dev\/disk4s1<\/strong> and hit <strong>Return<\/strong>. <\/li><li>Check the message provided by the\nfsck command. Rerun fsck command till you get OK.<\/li><li>Reboot your Mac and this time don\u2019t\npress any key to boot your Mac normally.<\/li><\/ol>\n\n\n\n<h4 id=\"Third_Point_Header\" style=\"text-align: left; background-color: #d1e4ff; border: 1px dotted #D1E4FF; padding: 30px 30px;\"><strong>3. Recover Inaccessible Data Using Mac Data Recovery Software<\/strong><\/h4>\n\n\n\n<p>When none of the above methods\nsucceed to repair the external hard drive, use a Mac data recovery software to\nrecover the inaccessible data from the drive whose file system, EFI partition,\nor partition table is lost, deleted, or damaged. <\/p>\n\n\n\n<p>Steps to recover data from a corrupt\nMac external drive are as follows:<\/p>\n\n\n\n<p>Free download the *trial version of <strong>Stellar Data Recovery Professional for Mac<\/strong>.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"https:\/\/cloud.stellarinfo.com\/micro\/StellarDataRecoveryProfessional.dmg.zip\"><img src=\"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-content\/uploads\/2021\/02\/Free-Download-Mac-Blue-button.png\" alt=\"\"\/><\/a><\/figure><\/div>\n\n\n\n<ul><li>Install the software in the Applications folder on your Mac.<\/li><li>Launch the software. Toggle on the file types to customize the scan. Click <strong>Next<\/strong>.<\/li><li>Select the corrupt external hard drive then click <strong>Scan<\/strong>.<\/li><li>Preview the scanned items to check their integrity. Select all those files that are required.<\/li><li>Click <strong>Recover<\/strong> then click <strong>Browse<\/strong> to specify the save location. Click <strong>Save<\/strong>.<\/li><li>View the recovered files from the recovery location.<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"flex-video\"><iframe loading=\"lazy\" title=\"Recover deleted data from external hard drive from macOS Big Sur, Catalina, Mojave, High Sierra\" width=\"1060\" height=\"596\" src=\"https:\/\/www.youtube.com\/embed\/p70yLlOgGB0?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/div>\n<\/div><\/figure>\n\n\n\n<p class=\"has-background has-very-light-gray-background-color\">*The trial software allows you to scan and preview files, but you need to activate it to save the recoverable files. The software has a 30-day money-back guarantee, so <a href=\"https:\/\/www.macintosh-data-recovery.com\/buy-now.php\" target=\"_blank\" rel=\"noopener noreferrer\">activate<\/a> with confidence.<\/p>\n\n\n\n<p>Once you recover your data, use Disk\nUtility to erase the external hard drive, and recreate a new file system.\nRestore the recovered data to the newly formatted external hard drive.<\/p>\n\n\n\n<h3>Precautions and Best Practices<\/h3>\n\n\n\n<p>The following precautions and best\npractices will lessen the chances of file system corruption:<\/p>\n\n\n\n<ul><li>Always unmount your external hard\ndrive safely.<\/li><li>Do not eject or pull the cable of the\ndrive abruptly.<\/li><li>Don\u2019t transfer files or manage\nexternal disk when your Mac is low in battery.<\/li><li>Back up your external hard drive\ndata.<\/li><\/ul>\n\n\n\n<h3>Conclusion<\/h3>\n\n\n\n<p>When Disk Utility\u2019s First Aid can\u2019t repair\nan external hard drive, use file system consistency check (fsck) command in Terminal\nor Single-User Mode to fix file system corruption issue. Corruption in the file\nsystem makes the stored data inaccessible, so follow the precautions and best\npractices to mitigate it.<\/p>\n\n\n\n<p>The fsck method is risky and can result in data loss, so back up the external hard drive before performing the steps. If you can\u2019t back up the data or want a safer solution, use <strong><a href=\"https:\/\/www.macintosh-data-recovery.com\/detail-features.php\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\" (opens in a new tab)\">Stellar Data Recovery Professional for Mac<\/a><\/strong> to scan and recover data from the corrupt external hard drive. Later, erase the drive and restore data to the drive.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Untitled Document Summary: In this blog, we\u2019ll share a variety of alternative methods to repair your Mac external hard drive in case Disk Utility fails to fix the drive. Download the free-to-try Mac data recovery tool to recover data from an external hard drive. Table of Content 1. Use FSCK Command in Terminal to Repair […]<\/p>\n","protected":false},"author":1,"featured_media":1701,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[5],"tags":[9],"acf":[],"yoast_head":"\n<title>How to repair Mac disk drive with terminal & optimizer software<\/title>\n<meta name=\"description\" content=\"Repair corrupt Mac external hard drive with the help of Terminal commands & Mac application that rebuilds the directory structure of hard drive.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to repair Mac disk drive with terminal & optimizer software\" \/>\n<meta property=\"og:description\" content=\"Repair corrupt Mac external hard drive with the help of Terminal commands & Mac application that rebuilds the directory structure of hard drive.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/\" \/>\n<meta property=\"og:site_name\" content=\"Mac Data Recovery\" \/>\n<meta property=\"article:published_time\" content=\"2019-08-08T08:51:11+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-03-25T02:42:50+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-content\/uploads\/2016\/03\/Repair-Mac-Hard-Drive-without-Disk-Utility.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"600\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Vishal\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/#website\",\"url\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/\",\"name\":\"Mac Data Recovery\",\"description\":\"Free Recover Data\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/#primaryimage\",\"inLanguage\":\"en-US\",\"url\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-content\/uploads\/2016\/03\/Repair-Mac-Hard-Drive-without-Disk-Utility.jpg\",\"contentUrl\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-content\/uploads\/2016\/03\/Repair-Mac-Hard-Drive-without-Disk-Utility.jpg\",\"width\":1000,\"height\":600,\"caption\":\"Repair-Mac-Hard-Drive-without-Disk-Utility\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/#webpage\",\"url\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/\",\"name\":\"How to repair Mac disk drive with terminal & optimizer software\",\"isPartOf\":{\"@id\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/#primaryimage\"},\"datePublished\":\"2019-08-08T08:51:11+00:00\",\"dateModified\":\"2021-03-25T02:42:50+00:00\",\"author\":{\"@id\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/#\/schema\/person\/469e86d0f9509223a178520123a9856a\"},\"description\":\"Repair corrupt Mac external hard drive with the help of Terminal commands & Mac application that rebuilds the directory structure of hard drive.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Repair Mac External Hard Drive without Disk Utility\"}]},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/#\/schema\/person\/469e86d0f9509223a178520123a9856a\",\"name\":\"Vishal\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/#personlogo\",\"inLanguage\":\"en-US\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/c43aa311fe399b0e1b0c69ba4891a73e?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/c43aa311fe399b0e1b0c69ba4891a73e?s=96&d=mm&r=g\",\"caption\":\"Vishal\"},\"description\":\"Your friendly neighbourhood data recovery expert for macOS. Further, you can check out the available Stellar Data Recovery for Mac options by yourself.\",\"sameAs\":[\"https:\/\/www.linkedin.com\/in\/vishal-chaudhary-46423021\/\"],\"url\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/author\/vishal\/\"}]}<\/script>\n","yoast_head_json":{"title":"How to repair Mac disk drive with terminal & optimizer software","description":"Repair corrupt Mac external hard drive with the help of Terminal commands & Mac application that rebuilds the directory structure of hard drive.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/","og_locale":"en_US","og_type":"article","og_title":"How to repair Mac disk drive with terminal & optimizer software","og_description":"Repair corrupt Mac external hard drive with the help of Terminal commands & Mac application that rebuilds the directory structure of hard drive.","og_url":"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/","og_site_name":"Mac Data Recovery","article_published_time":"2019-08-08T08:51:11+00:00","article_modified_time":"2021-03-25T02:42:50+00:00","og_image":[{"width":1000,"height":600,"url":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-content\/uploads\/2016\/03\/Repair-Mac-Hard-Drive-without-Disk-Utility.jpg","type":"image\/jpeg"}],"twitter_card":"summary","twitter_misc":{"Written by":"Vishal","Est. reading time":"6 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebSite","@id":"https:\/\/www.macintosh-data-recovery.com\/blog\/#website","url":"https:\/\/www.macintosh-data-recovery.com\/blog\/","name":"Mac Data Recovery","description":"Free Recover Data","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.macintosh-data-recovery.com\/blog\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"ImageObject","@id":"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/#primaryimage","inLanguage":"en-US","url":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-content\/uploads\/2016\/03\/Repair-Mac-Hard-Drive-without-Disk-Utility.jpg","contentUrl":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-content\/uploads\/2016\/03\/Repair-Mac-Hard-Drive-without-Disk-Utility.jpg","width":1000,"height":600,"caption":"Repair-Mac-Hard-Drive-without-Disk-Utility"},{"@type":"WebPage","@id":"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/#webpage","url":"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/","name":"How to repair Mac disk drive with terminal & optimizer software","isPartOf":{"@id":"https:\/\/www.macintosh-data-recovery.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/#primaryimage"},"datePublished":"2019-08-08T08:51:11+00:00","dateModified":"2021-03-25T02:42:50+00:00","author":{"@id":"https:\/\/www.macintosh-data-recovery.com\/blog\/#\/schema\/person\/469e86d0f9509223a178520123a9856a"},"description":"Repair corrupt Mac external hard drive with the help of Terminal commands & Mac application that rebuilds the directory structure of hard drive.","breadcrumb":{"@id":"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.macintosh-data-recovery.com\/blog\/"},{"@type":"ListItem","position":2,"name":"Repair Mac External Hard Drive without Disk Utility"}]},{"@type":"Person","@id":"https:\/\/www.macintosh-data-recovery.com\/blog\/#\/schema\/person\/469e86d0f9509223a178520123a9856a","name":"Vishal","image":{"@type":"ImageObject","@id":"https:\/\/www.macintosh-data-recovery.com\/blog\/#personlogo","inLanguage":"en-US","url":"https:\/\/secure.gravatar.com\/avatar\/c43aa311fe399b0e1b0c69ba4891a73e?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/c43aa311fe399b0e1b0c69ba4891a73e?s=96&d=mm&r=g","caption":"Vishal"},"description":"Your friendly neighbourhood data recovery expert for macOS. Further, you can check out the available Stellar Data Recovery for Mac options by yourself.","sameAs":["https:\/\/www.linkedin.com\/in\/vishal-chaudhary-46423021\/"],"url":"https:\/\/www.macintosh-data-recovery.com\/blog\/author\/vishal\/"}]}},"_links":{"self":[{"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/posts\/24"}],"collection":[{"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/comments?post=24"}],"version-history":[{"count":34,"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/posts\/24\/revisions"}],"predecessor-version":[{"id":2704,"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/posts\/24\/revisions\/2704"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/media\/1701"}],"wp:attachment":[{"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/media?parent=24"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/categories?post=24"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/tags?post=24"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":24,"date":"2019-08-08T08:51:11","date_gmt":"2019-08-08T08:51:11","guid":{"rendered":"http:\/\/www.macintosh-data-recovery.com\/blog\/?p=24"},"modified":"2021-03-25T02:42:50","modified_gmt":"2021-03-25T02:42:50","slug":"repair-mac-external-hard-drive","status":"publish","type":"post","link":"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/","title":{"rendered":"Repair Mac External Hard Drive without Disk Utility"},"content":{"rendered":"\n\n\n\nUntitled Document<\/title>\n<\/head>\n\n<body>\n<div style=\"text-align:justify; padding:10px; background:#eee\"> <p style=\"padding:10px 5px 15px 5px; margin-bottom:0\"> <strong>Summary: <\/strong>In this blog, we\u2019ll share a variety of alternative methods to repair your Mac external hard drive in case Disk Utility fails to fix the drive.<br><br>\nDownload the free-to-try Mac data recovery tool to recover data from an external hard drive.\n<br><br>\n\n<a href=\"https:\/\/cloud.stellarinfo.com\/micro\/StellarDataRecoveryProfessional.dmg.zip\" style=\"display:block; text-align:center; margin:auto\"><img src=\"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-content\/uploads\/2021\/02\/Free-Download-Mac-Blue-button.png\" alt=\"Free-Download-Mac\" class=\"wp-image-41518\" align=\"center\"><\/a><\/p>\n\n <\/div>\n<\/body>\n<\/html>\n\n\n\n<br><h4><strong>Table of Content<\/strong><\/h4>\n\n\n\n<strong>1<\/strong>. <a href=\"#First_Point_Header\"><span style=\"text-decoration: underline;\">Use FSCK Command in Terminal to Repair External Hard Drive<\/span><\/a><br>\n\n<strong>2<\/strong>. <a href=\"#Second_Point_Header\"><span style=\"text-decoration: underline;\">Use FSCK Command in Single-User Mode to Fix External Drive<\/span><\/a><br>\n\n<strong>3<\/strong>. <a href=\"#Third_Point_Header\"><span style=\"text-decoration: underline;\">Recover Inaccessible Data Using Mac Data Recovery Software<\/span><\/a>\n\n\n\n<br><br>Disk Utility is a useful storage drive management software that allows you to perform the external hard drive repair task with ease by using First Aid. But sometimes, Disk Utility\u2019s First Aid fails to repair your external hard drive and the drive\u2019s data remains inaccessible. Don\u2019t worry, you can use alternative methods to repair your Mac external hard drive in case Disk Utility doesn\u2019t work. Also, you can recover data from a corrupt external drive on Mac. <\/p><\/p>\n\n\n\n<p>But before learning the repair and\nrecovery methods, know why a Mac external hard drive turns inaccessible, appreciate\nthe Mac file system and its importance, and learn the reasons that lead to file\nsystem corruption.<\/p>\n\n\n\n<h3><strong>Why Mac External Hard Drive Turns\nInaccessible?<\/strong><\/h3>\n\n\n\n<p>At times, an unexpected event\ncorrupts the partition table, EFI partition, or APFS\/HFS file system of the Mac\nexternal storage drive. This logical damage of the external hard drive makes\nthe drive and its stored data inaccessible on Mac.<\/p>\n\n\n\n<h3><strong>Mac File System and Its Importance<\/strong><\/h3>\n\n\n\n<p>Your Mac external hard drive contains\nreserved space for GUID Partition Table, EFI System Partition, and APFS\nContainer. The APFS container comprises Container superblock, Checkpoint area,\nSpace manager area, and storage for objects and file data. The container can\nhave multiple volumes with their file systems. The Mac\u2019s file system allows\nstorage and retrieval of data to and from the storage drive.<\/p>\n\n\n\n<h2><strong>Reasons for File System Corruption<\/strong><\/h2>\n\n\n\n<p>The following situations may damage\nthe storage drive\u2019s file system, which may not get fixed with Disk Utility\u2019s\nFirst Aid feature:<\/p>\n\n\n\n<ul><li>An application may write into the\nfile system thereby causing corruption on the disk.<\/li><li>If the block containing the file\nsystem of the drive turns bad, then the storage drive fails.<\/li><li>A malware on Mac may write on the\nfile system space, thus crippling drive access. <\/li><\/ul>\n\n\n\n<p>Few reasons for corruption of legacy\nfile-system formatted storage drive are as follows:<\/p>\n\n\n\n<ul><li>A macOS crash or abrupt power cut\nresults in non-syncing of information to the file system, which results in its\ncorruption.<\/li><li>The sudden removal of an external\nstorage drive without proper un-mounting may result in an incomplete write\noperation and corruption.<\/li><li>If the external storage drive does\nnot un-mount due to running programs that are accessing the drive, forced\nejection can corrupt its file system.<\/li><\/ul>\n\n\n\n<p>The next sections describe numerous methods\nto repair Mac storage drive without Disk Utility.<\/p>\n\n\n\n<h4 id=\"First_Point_Header\" style=\"text-align: left; background-color: #d1e4ff; border: 1px dotted #D1E4FF; padding: 30px 30px;\"><strong>1. Use FSCK Command in Terminal to Repair External Hard Drive<\/strong><\/h4>\n\n\n\n<p>When Disk Utility\u2019s First Aid can\u2019t fix\nthe file system corruption issue on your Mac external hard drive, run the fsck (file\nsystem consistency check) command in the macOS Terminal. <\/p>\n\n\n\n<p>Steps to repair Mac external hard\ndrive by using Terminal are as follows:<\/p>\n\n\n\n<ol><li>Go to <strong>Finder<\/strong> > <strong>Applications<\/strong> > <strong>Utilities<\/strong> > <strong>Terminal<\/strong>.<\/li><li>In the Terminal window, type <strong>df \u2013h<\/strong> and hit <strong>Return<\/strong>. Note down the file system identifier of the external hard drive, say <strong>\/dev\/disk4s1<\/strong>.<\/li><li>Type <strong>unmount \/dev\/disk4s1<\/strong> and hit <strong>Return<\/strong>. This command unmounts the external drive.<\/li><li>Type <strong>fsck_hfs -y \/dev\/disk4s1<\/strong> and hit <strong>Return<\/strong>. The fsck_hfs verifies and repairs hfs containers and volumes. If the external storage drive is in the apfs format, use fsck_apfs instead of fsck_hfs. The parameter -y repairs any damage that is found.<\/li><li>If you receive the message \u201cFile system was modified\u201d, re-run the above fsck command. <\/li><li>Use the fsck command again until it says, \u201cThe volume appears to be OK.\u201d<\/li><\/ol>\n\n\n\n<p class=\"has-background has-very-light-gray-background-color\"><strong>Also Read: <\/strong><a rel=\"noreferrer noopener\" href=\"https:\/\/www.macintosh-data-recovery.com\/blog\/top-5-mac-hard-disk-drive-repair-software\/\" target=\"_blank\"><strong>List of Top 5 Mac Hard Disk Drive Repair Software<\/strong><\/a><\/p>\n\n\n\n<h4 id=\"Second_Point_Header\" style=\"text-align: left; background-color: #d1e4ff; border: 1px dotted #D1E4FF; padding: 30px 30px;\"><strong>2. Use FSCK Command in Single-User Mode to Fix External Drive<\/strong><\/h4>\n\n\n\n<p>Use the fsck command in the single-user\nmode to repair the file system corruption issue on your Mac external hard drive.\n<\/p>\n\n\n\n<p>Steps to repair Mac external hard\ndrive by using single-user mode are as follows:<\/p>\n\n\n\n<ol><li>Start or restart your Mac then\npromptly press and hold <strong>Command<\/strong> + <strong>S<\/strong> keys.<\/li><li>Release the keys once you see white\ntext. Your Mac boots into single-user mode.<\/li><li>On the prompt, type <strong>fsck_hfs \u2013y \/dev\/disk4s1<\/strong> and hit <strong>Return<\/strong>. <\/li><li>Check the message provided by the\nfsck command. Rerun fsck command till you get OK.<\/li><li>Reboot your Mac and this time don\u2019t\npress any key to boot your Mac normally.<\/li><\/ol>\n\n\n\n<h4 id=\"Third_Point_Header\" style=\"text-align: left; background-color: #d1e4ff; border: 1px dotted #D1E4FF; padding: 30px 30px;\"><strong>3. Recover Inaccessible Data Using Mac Data Recovery Software<\/strong><\/h4>\n\n\n\n<p>When none of the above methods\nsucceed to repair the external hard drive, use a Mac data recovery software to\nrecover the inaccessible data from the drive whose file system, EFI partition,\nor partition table is lost, deleted, or damaged. <\/p>\n\n\n\n<p>Steps to recover data from a corrupt\nMac external drive are as follows:<\/p>\n\n\n\n<p>Free download the *trial version of <strong>Stellar Data Recovery Professional for Mac<\/strong>.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"https:\/\/cloud.stellarinfo.com\/micro\/StellarDataRecoveryProfessional.dmg.zip\"><img src=\"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-content\/uploads\/2021\/02\/Free-Download-Mac-Blue-button.png\" alt=\"\"\/><\/a><\/figure><\/div>\n\n\n\n<ul><li>Install the software in the Applications folder on your Mac.<\/li><li>Launch the software. Toggle on the file types to customize the scan. Click <strong>Next<\/strong>.<\/li><li>Select the corrupt external hard drive then click <strong>Scan<\/strong>.<\/li><li>Preview the scanned items to check their integrity. Select all those files that are required.<\/li><li>Click <strong>Recover<\/strong> then click <strong>Browse<\/strong> to specify the save location. Click <strong>Save<\/strong>.<\/li><li>View the recovered files from the recovery location.<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"flex-video\"><iframe loading=\"lazy\" title=\"Recover deleted data from external hard drive from macOS Big Sur, Catalina, Mojave, High Sierra\" width=\"1060\" height=\"596\" src=\"https:\/\/www.youtube.com\/embed\/p70yLlOgGB0?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/div>\n<\/div><\/figure>\n\n\n\n<p class=\"has-background has-very-light-gray-background-color\">*The trial software allows you to scan and preview files, but you need to activate it to save the recoverable files. The software has a 30-day money-back guarantee, so <a href=\"https:\/\/www.macintosh-data-recovery.com\/buy-now.php\" target=\"_blank\" rel=\"noopener noreferrer\">activate<\/a> with confidence.<\/p>\n\n\n\n<p>Once you recover your data, use Disk\nUtility to erase the external hard drive, and recreate a new file system.\nRestore the recovered data to the newly formatted external hard drive.<\/p>\n\n\n\n<h3>Precautions and Best Practices<\/h3>\n\n\n\n<p>The following precautions and best\npractices will lessen the chances of file system corruption:<\/p>\n\n\n\n<ul><li>Always unmount your external hard\ndrive safely.<\/li><li>Do not eject or pull the cable of the\ndrive abruptly.<\/li><li>Don\u2019t transfer files or manage\nexternal disk when your Mac is low in battery.<\/li><li>Back up your external hard drive\ndata.<\/li><\/ul>\n\n\n\n<h3>Conclusion<\/h3>\n\n\n\n<p>When Disk Utility\u2019s First Aid can\u2019t repair\nan external hard drive, use file system consistency check (fsck) command in Terminal\nor Single-User Mode to fix file system corruption issue. Corruption in the file\nsystem makes the stored data inaccessible, so follow the precautions and best\npractices to mitigate it.<\/p>\n\n\n\n<p>The fsck method is risky and can result in data loss, so back up the external hard drive before performing the steps. If you can\u2019t back up the data or want a safer solution, use <strong><a href=\"https:\/\/www.macintosh-data-recovery.com\/detail-features.php\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\" (opens in a new tab)\">Stellar Data Recovery Professional for Mac<\/a><\/strong> to scan and recover data from the corrupt external hard drive. Later, erase the drive and restore data to the drive.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Untitled Document Summary: In this blog, we\u2019ll share a variety of alternative methods to repair your Mac external hard drive in case Disk Utility fails to fix the drive. Download the free-to-try Mac data recovery tool to recover data from an external hard drive. Table of Content 1. Use FSCK Command in Terminal to Repair […]<\/p>\n","protected":false},"author":1,"featured_media":1701,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[5],"tags":[9],"acf":[],"yoast_head":"\n<title>How to repair Mac disk drive with terminal & optimizer software<\/title>\n<meta name=\"description\" content=\"Repair corrupt Mac external hard drive with the help of Terminal commands & Mac application that rebuilds the directory structure of hard drive.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to repair Mac disk drive with terminal & optimizer software\" \/>\n<meta property=\"og:description\" content=\"Repair corrupt Mac external hard drive with the help of Terminal commands & Mac application that rebuilds the directory structure of hard drive.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/\" \/>\n<meta property=\"og:site_name\" content=\"Mac Data Recovery\" \/>\n<meta property=\"article:published_time\" content=\"2019-08-08T08:51:11+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-03-25T02:42:50+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-content\/uploads\/2016\/03\/Repair-Mac-Hard-Drive-without-Disk-Utility.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"600\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Vishal\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/#website\",\"url\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/\",\"name\":\"Mac Data Recovery\",\"description\":\"Free Recover Data\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/#primaryimage\",\"inLanguage\":\"en-US\",\"url\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-content\/uploads\/2016\/03\/Repair-Mac-Hard-Drive-without-Disk-Utility.jpg\",\"contentUrl\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-content\/uploads\/2016\/03\/Repair-Mac-Hard-Drive-without-Disk-Utility.jpg\",\"width\":1000,\"height\":600,\"caption\":\"Repair-Mac-Hard-Drive-without-Disk-Utility\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/#webpage\",\"url\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/\",\"name\":\"How to repair Mac disk drive with terminal & optimizer software\",\"isPartOf\":{\"@id\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/#primaryimage\"},\"datePublished\":\"2019-08-08T08:51:11+00:00\",\"dateModified\":\"2021-03-25T02:42:50+00:00\",\"author\":{\"@id\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/#\/schema\/person\/469e86d0f9509223a178520123a9856a\"},\"description\":\"Repair corrupt Mac external hard drive with the help of Terminal commands & Mac application that rebuilds the directory structure of hard drive.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Repair Mac External Hard Drive without Disk Utility\"}]},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/#\/schema\/person\/469e86d0f9509223a178520123a9856a\",\"name\":\"Vishal\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/#personlogo\",\"inLanguage\":\"en-US\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/c43aa311fe399b0e1b0c69ba4891a73e?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/c43aa311fe399b0e1b0c69ba4891a73e?s=96&d=mm&r=g\",\"caption\":\"Vishal\"},\"description\":\"Your friendly neighbourhood data recovery expert for macOS. Further, you can check out the available Stellar Data Recovery for Mac options by yourself.\",\"sameAs\":[\"https:\/\/www.linkedin.com\/in\/vishal-chaudhary-46423021\/\"],\"url\":\"https:\/\/www.macintosh-data-recovery.com\/blog\/author\/vishal\/\"}]}<\/script>\n","yoast_head_json":{"title":"How to repair Mac disk drive with terminal & optimizer software","description":"Repair corrupt Mac external hard drive with the help of Terminal commands & Mac application that rebuilds the directory structure of hard drive.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/","og_locale":"en_US","og_type":"article","og_title":"How to repair Mac disk drive with terminal & optimizer software","og_description":"Repair corrupt Mac external hard drive with the help of Terminal commands & Mac application that rebuilds the directory structure of hard drive.","og_url":"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/","og_site_name":"Mac Data Recovery","article_published_time":"2019-08-08T08:51:11+00:00","article_modified_time":"2021-03-25T02:42:50+00:00","og_image":[{"width":1000,"height":600,"url":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-content\/uploads\/2016\/03\/Repair-Mac-Hard-Drive-without-Disk-Utility.jpg","type":"image\/jpeg"}],"twitter_card":"summary","twitter_misc":{"Written by":"Vishal","Est. reading time":"6 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebSite","@id":"https:\/\/www.macintosh-data-recovery.com\/blog\/#website","url":"https:\/\/www.macintosh-data-recovery.com\/blog\/","name":"Mac Data Recovery","description":"Free Recover Data","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.macintosh-data-recovery.com\/blog\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"ImageObject","@id":"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/#primaryimage","inLanguage":"en-US","url":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-content\/uploads\/2016\/03\/Repair-Mac-Hard-Drive-without-Disk-Utility.jpg","contentUrl":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-content\/uploads\/2016\/03\/Repair-Mac-Hard-Drive-without-Disk-Utility.jpg","width":1000,"height":600,"caption":"Repair-Mac-Hard-Drive-without-Disk-Utility"},{"@type":"WebPage","@id":"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/#webpage","url":"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/","name":"How to repair Mac disk drive with terminal & optimizer software","isPartOf":{"@id":"https:\/\/www.macintosh-data-recovery.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/#primaryimage"},"datePublished":"2019-08-08T08:51:11+00:00","dateModified":"2021-03-25T02:42:50+00:00","author":{"@id":"https:\/\/www.macintosh-data-recovery.com\/blog\/#\/schema\/person\/469e86d0f9509223a178520123a9856a"},"description":"Repair corrupt Mac external hard drive with the help of Terminal commands & Mac application that rebuilds the directory structure of hard drive.","breadcrumb":{"@id":"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.macintosh-data-recovery.com\/blog\/repair-mac-external-hard-drive\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.macintosh-data-recovery.com\/blog\/"},{"@type":"ListItem","position":2,"name":"Repair Mac External Hard Drive without Disk Utility"}]},{"@type":"Person","@id":"https:\/\/www.macintosh-data-recovery.com\/blog\/#\/schema\/person\/469e86d0f9509223a178520123a9856a","name":"Vishal","image":{"@type":"ImageObject","@id":"https:\/\/www.macintosh-data-recovery.com\/blog\/#personlogo","inLanguage":"en-US","url":"https:\/\/secure.gravatar.com\/avatar\/c43aa311fe399b0e1b0c69ba4891a73e?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/c43aa311fe399b0e1b0c69ba4891a73e?s=96&d=mm&r=g","caption":"Vishal"},"description":"Your friendly neighbourhood data recovery expert for macOS. Further, you can check out the available Stellar Data Recovery for Mac options by yourself.","sameAs":["https:\/\/www.linkedin.com\/in\/vishal-chaudhary-46423021\/"],"url":"https:\/\/www.macintosh-data-recovery.com\/blog\/author\/vishal\/"}]}},"_links":{"self":[{"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/posts\/24"}],"collection":[{"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/comments?post=24"}],"version-history":[{"count":34,"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/posts\/24\/revisions"}],"predecessor-version":[{"id":2704,"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/posts\/24\/revisions\/2704"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/media\/1701"}],"wp:attachment":[{"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/media?parent=24"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/categories?post=24"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.macintosh-data-recovery.com\/blog\/wp-json\/wp\/v2\/tags?post=24"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}