You should see at least two, sometimes three, entries for. If you are running 10.12 or 10.11 this step is not required as the option is not available. Change the view to Show All Devices instead of the default which is Show Only Volumes. Now I tried to unmount the disk using that command and even with the force wildcard but it said: Forced unmount of disk0 failed: at least one volume could not be unmounted Unmount was dissented by PID 0 The volume with PID 0 from the list provided by diskutil list is called GUIDpartitionscheme.
I quit the terminal window when I finish doing the backup. If you are running macOS 10.13 (High Sierra) or later it is important to change the view in Disk Utility. Almost forgot about this from Disk Utility: Disk Utility can’t repair this. If you have any idea to get the HDD working or even safe the files, I would be really grateful. The script runs just fine, but when the backup is completed, I drag the desktop image of the FireWire drive to the trash to unmount it and get a finder alert saying "The operation could not be completed because the disk "backup disk" is in use.Īny ideas what the problem is? I don't have any applications running that I know of that use the backup disk. This was the try: sudo diskutil eraseDisk JHFS+ DISKVOLUME disk1 Started erase on disk1 Unmounting disk Error: -69888: Couldnt unmount disk. I've been using a Unix script to back up my internal PowerBook drive to an external FireWire drive. I am in a bit of problem at the moment, I have a Intel MacBook it had 10.4.10 installed on it I could not load Mac: Office on to the machine so I was advised to reinstall Mac OS X 10.4.11 on the machine and then try.
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