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Mac could not unmount disk
Mac could not unmount disk





mac could not unmount disk

How to Mount a Drive using Terminal on Mac # How to Unmount a Drive using Terminal on Mac # Unmount and Remount Drive on Mac using a Single Command # So without further ado, let’s get started with the steps to mount/unmount any disk drive using Terminal on your Mac. And in this guide, we will show you how to do just that.

mac could not unmount disk

So in such cases, your best bet is to take the help of the command line to get this job done. If you have another solution to a partition failed error in Mac OS Disk Utility, share with us in the comments below.However, in some instances, the Disk Utility might not display the drive that you wish to mount/unmount. You can also use the ‘fsck_hfs’ command if desired. But, fortunately fsck does work just fine for most situations where ‘partition failed’ error is showing up in Mac OS, so give it a try.ĭo note that “fsck” can take a while to run and complete, depending on the size of the drive. The cause of this remains to be seen, and repairing the disk from Disk Utility itself doesn’t work, even when in Single User Mode or when booting from another drive. I have encountered this error a few times when partitioning the boot drive from OS X Lion, most recently after a clean installation when setting up dual boot for OS X Lion and Mountain Lion. Often users may see this error when attempting to partition a Mac boot drive for dual booting or for some similar purpose. Boot the Mac as usual, verify the disk again in Disk Utility, and partition as usualīoot the Mac as usual and relaunch Disk Utility to verify the disk.Īt this point, you can go ahead and partition the drive as usual, this time without any such “Partition Failed” error message appearing in Disk Utility.

mac could not unmount disk

  • When fsck is complete, type “exit” or “reboot” to reboot.
  • Reboot the Mac into Single User Mode by holding Command+S during boot.
  • This walkthrough will demonstrate the necessary steps to resolve the partition failed error by running a file system command from Mac Single User mode.įixing “Partition Failed” Errors in Mac OS Xīe sure you back up your Mac before beginning. To issue the file system check and repair function properly, you’ll need to boot into Single User Mode as well.







    Mac could not unmount disk