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First aid mac volume could not be unmounted
First aid mac volume could not be unmounted




first aid mac volume could not be unmounted

īooted in Safe Mode, tried Disk Utility’s First Aid. I wiped/erased my internal Mojave drive (Disk Util Erase), installed a fresh Catalina (from a USB thumb drive) in a new user account (not my old Mojave account), then did a Migration Assistant from a Carbon Copy Cloner backup of the Mojave data from an external USB drive. I recently did a fresh installed of Catalina (10.15.7) on my 2017 iMac. (A work in progress.) Maybe this is something to do with the Recovery partition or maybe it’s because I put my Catalina Apple Music Library (.itl & media files) on this drive? Īny help would be appreciated. I have been so far unsuccessful at figuring out which Catalina App is using one or both of these drives. After trying to unmount the 4 & 8 TB drives, I’ve sometimes had the error “cannot unmount, drive is in use” problem. I searched for this problem but haven’t finished debugging. One mystery that might be related is, while I could indeed get Time Machine to backup to a (third) new 6 TB USB drive, I can’t use the new 8 TB drive with Time Machine - it is greyed out in Time Machine Preferences. Sometimes First Aid would work, other times not. Logged in to another (new) account on my iMac, tried First Aid.įor both of the above, I could only SOMETIMES get Disk Util to unmount.Booted in Safe Mode, tried Disk Utility’s First Aid.After a forum search here, I tried (with varying success): Then I tried Disk Utility’s First Aid on both my 4 TB & 8 TB external USB drives, but neither would unmount, so First Aid failed on both. So, I ‘Quit’ iTunes when songs stopped playing. (I am not and have never been an Apple Music subscriber, not that there’s anything wrong with it.) The media files were all manually imported by me, they are not streaming songs from Apple servers. Therefore, there might be a hope that it works after you rerun it.

first aid mac volume could not be unmounted

First Aid will try to verify and fix the content on the selected volume every time. I could double-click or select files or hit Enter on selected songs/videos and their info at the top center of the Apple Music App window (e.g., artist, song title, artwork…) would appear, but no audio, no video and no time was displayed in this same window. Solution 1: Run First Aid one more time On Apple's official Support page, users are encouraged to run First Aid more than once. After a few days adding more imported files without incident, today, after playing a dozen songs and music videos in the Catalina Apple Music App, it stopped playing. (I only lost 3,400 artwork files in the transition, but I'll be fine after therapy). I successfully transitioned my old Mojave iTunes library into a working Catalina, Apple Music App library, and moved it to the newer Seagate 8 TB external USB drive. The internal iMac drive has an empty iTunes library.]






First aid mac volume could not be unmounted