Free recover data from External Hard Drive failing to mount on macOS Big Sur or Catalina

With the help of a free data recovery software mentioned here, a user can recover complete data from the unrecognized or inaccessible Mac Storage drive.


Many Mac users around the world face the “external hard drive/flash drive not mounting or recognized” issue. This problem occurs mostly when the user upgrades from a lower version of macOS to the higher. Additionally, an external storage drive may possess a troubled file system due to which the same fails to mount/recognize on macOS Big Sur or Catalina. 

The solution to the external storage drive not recognized and failing to mount on macOS could be by updating the firmware of the external hard drive including drivers. Secondly, reinstalling macOS could also resolve the problem and provide access to the external storage drive comfortably. 

Repair External Drive with Disk Utility

If the external storage drive appears in the Disk Utility, but not on the macOS Big Sur desktop, then you need to click on the “First Aid” and repair the external drive connected to the Mac. If the macOS could not recognize the external drive’s file-system, then you need to format the drive to Apple’s supported files systems such as APFS, HFS+, HFS, or ExFAT.

Note: Disk Utility is able to repair minor corruption and this could possibly resolve the problem of an external hard drive not mounting (recognized) on macOS.

Free Data Recovery from Unrecognized External Drive on Big Sur/Catalina/Mojave

If an external storage drive goes unrecognized on Big Sur (or unmounted) then all the videos, files, images, audio, and other data stored on the storage drive become inaccessible. In such a case, a professional macOS External Storage Drive Recovery Software comes useful, which recovers the complete data from an external storage drive.

About the Stellar Data Recovery Free Edition for Mac Software

Stellar Data Recovery Free Edition for Mac software is fully macOS Big Sur version 11 compatible and can recover any type of file or folder from external macOS storage drive, This data recovery software lets user recover inaccessible videos, audios, photos, documents, emails etc. The software recovers data from an external hard drive with APFS, HFS+ and HFS file format system. This software also supports ex-FAT, FAT, and NTFS file system.

Watch the Video to Recover 1 GB Data for Free:

*Recover up to 1GB lost or deleted data for free.