'erase process has failed' Details: Unmounting disk. For example, APFS is incompatible with Apple’s Time Machine backup application and FileVault 2 (which is used to encrypt full drives), and cannot be used to format Fusion drives - those drives that use a combination of a solid-state drive and conventional hard disk drive. Erase process has failed couldn’t unmount disk Erase process failed. and your Mac can not erase the drive by Hardware-name, your Mac needs. press say to continue On a Windows PC, open the PSSDCleanup.bat file from the directory where the software is installed (e.g., OS Installation Drive ProgramData Samsung Apps Portable SSD) and proceed with uninstallation, or go to Control Panel Programs and Features. What if you accidentally format a drive in the APFS format and then realize you can’t use Time Machine or FileVault 2? I recently ran into this dilemma when I formatted an external drive in the APFS format and it was unusable by Time Machine.
#Mac cannot unmount disk to erase how to
In this tech tip, I’ll show you how to revert back to HFS+. #Mac erase process has failed couldn t unmount disk how to
Answer (1 of 2): You must be getting Erase process has failed error while trying to erase SD card on Mac using Disk Utility. You can’t just use Disk Utility to reformat an APFS disk to HFS+ - once it has been converted to APFS, the only options that appear for erasing an APFS disk are to reformat in APFS. #Mac erase process has failed couldn t unmount disk how to.
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