I am at a loss for what to do here, and any suggestions are greatly appreciated. Back up as many of your files as possible, reformat the disk, and restore your backed-up files. Error: Disk Utility can’t repair this disk. If you unmount and disconnect a disk and then reconnect the disk later, Disk Utility rebuilds.

Disconnect the disk member that you want to unmount. Mac data recovery software is also introduced here. Click the Unmount button in the toolbar or beside the disk set name. This post shows you how to use Disk Utility on Mac to partition, wipe, repair, restore, and copy a drive. Volume repair complete.Updating boot support partitions for the volume as required. In the Disk Utility app on your Mac, select the disk set that you want to unmount in the sidebar. I have made sure no files are in use, yet I still receive this message when I never have before.Īlso, if I attempt to run another repair through Disk Utility once the partitions are unmounted, I see this: To eject the disk immediately, click the Force Eject button. The disk “Storage” wasn’t ejected because one or more programs may be using it.

If I try to unmount from Finder, I receive this message: When I attempt to run a Disk Utility repair, this occurs: Today, my time machine backups started failing on the device, and eventually I lost access to backups (as well as my music and photos on another partition). I have a Western Digital MyPassport 1TB external hard drive, that’s less than 1 year old.

Can't unmount hard drive for repair mac