Every HFS+ volume contains a volume header of 1024 bytes from the beginning of the volume. A volume header, analogous to the MDB or Master Directory Block for HFS file system, contains information regarding the volume as a whole, including the physical location of the other key structures in the volume.
Volume header also contains the information related to the particular volume like name, number of files and folders stored, and amount of free disk space. The volume header is responsible for making sure that all the key structures are updated before un-mounting the volume.
In HFS and HFS+ file systems allocation blocks and volume header files are known as allocation files. When you attempt to access data from the particular volume, operating system directly interacts with the volume header to get information that the particular file or folder is present or not. If it doesn’t find the particular information, the data can’t be retrieved.
Sometimes, when you try to access a particular logical volume, you may face some kind of errors. In such situations, the volume becomes inaccessible and the data stored on it can’t be used. The error message may be the following:
“Volume Header Needs To Repair”
This problem occurs if the volume header of the particular volume is corrupted. When operating system interacts with the volume header to the particular file or folder, it shows that it doesn’t exist and operating system shows this error message.
To resolve such type of problems, you need to format the hard drive and recreate the partitions. It is the only and the easiest remedy for this problem. It will install a new volume header and file system on your hard drive.
But have you ever thought about the other side of coin. All of the data stored on your hard drive will be at stake of loss. Formatting wipes all of the data stored on the hard drive. Such circumstances can create weird problems for your business and can possible put you out of the business.
But these situations are not as much critical as you think. Your data is still present on your Mac hard drive and you can recover it very easily using data recovery software. The data recovery software developed for Mac operating system are called Macintosh data recovery. Using data recovery Mac software, you can tackle with all of the logical data loss situations.
Stellar Phoenix Macintosh Data Recovery software is the most powerful and an outstanding data recovery software. This Mac recovery software is fairly easy to use and provides an interactive user interface so that you can perform Do It Yourself Mac data recovery.
The software employs such powerful algorithms that can extract the data from all possible situations up to the maximum level of possibility. This Mac data recovery can recover data from all file versions of Macintosh including Mac OS X 10.3, 10.4, and 10.5. The file system supported by this Mac recovery software includes HFS, HFS+ and ReiserFS.
