I then unplugged the cable and plugged it back in. I then went to Finder and did an Eject, though I'm sure I could have done that manually. The command First Aid ran is fsck_hfs -fy -x /dev/disk2s2 Could You Have Plugged Your Samsung SSD Drive Out Without Ejecting 3. It runs with a -fy -x rather than just -y. Is Your T7 External SSD In A Format Your Mac Can Read 2. I noticed that First Aid runs fsck but with different options than what was running automatically. However, if your Mac doesn't start up all the way, or you want to repair the disk your Mac starts up from, open Disk Utility from macOS Recovery: Apple silicon : Turn on your Mac and continue to press and hold the power button. Your Mac will permit you to delete the drive if you boot into recovery mode (hold down R while booting) and use Disk Utility to format it or if you do a. Then in the Disk Utility I selected external disk drive and ran First Aid.Īfter First Aid completed, about 2 hours later I was able to Mount the disk through Disk Utility. In general, you can just open Disk Utility from the Utilities folder of your Applications folder. That stopped the fsck that had made the disk busy. Particularly large programs, such as Microsoft. In terminal I ran - ps aux | grep fsck followed by sudo pkill -f fsck An ISO file, also known as an ISO image, is a disc image of all the installation files for a single program. The reason it was busy was that fsck ran as soon as I plugged the disk in. I tried the various fixes suggested to do it manually in Terminal. Had the same issue and have been fighting it for days. If you want to preserve the volume as opposed to erase the drive, here are steps. (Drive originally formatted/used on an High Sierra Mac.) Also tried an iMac which refused to mount it. I've done all of the above several times.Īny ideas for untrashing this 2TB Seagate drive? Using a MacBook Pro with High Sierra. (guess it didnt need to reformat and hence not need to unmount) I am a. When I try to reboot, the desktop icons disappear, the reboot never finishes and I end up forcing a shutdown via the power button. Using macOS Utilities The system cant unmount the disk you are currently booted. resulted in "Unmount of disk2 failed: at least one volume could not be unmounted." To unmount the disk, simply uncheck that automatic backup option. Thats it If you want to back up automatically, that external disk must remain mounted. On the left side of that, there is a check box to 'back up automatically.' SIMPLY UNCHECK THAT BOX. which resulted in an error that it was already unmounted or "has a partitioning scheme so use 'disk util unmountDisk' instead" The solution is to merely go to Time Machine Preferences. The new backup format is optimized for storing VM backups fast and. which resulted in an error -69888: Couldn't unmount disk. The file system stores all data inside a persistent database on disk, nonetheless. Sudo diskutil eraseDisk JHFS+ Reformat /dev/disk2 Disk Utility failed to unmount the Data partition and reported the TM partition was OK, but I can't eject either without issues: Trying to reformat a drive that was used for an employee's Time Machine and Data storage.
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