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Since updating to Catalina, I can't eject my external drive without relaunching the finder. It is constantly spinning and when I do try to eject it says drive in use by finder. I tried using the disc utility to check the disc but it says that the disk won't unmount. I don't know what else to try.
iMac Pro, macOS 10.15
I think I may have solved my problem. The relaunching of the finder is a good work around. I relaunched my finder, unmounted the EHD and then went to the disk Utility and repaired the unmounted disk. It took many hours (all night) to make the repairs but in the morning my problem was solved. Don't lose patience when it seems that nothing is happening with the disk repair. Set it and forget it and in the morning the problem may be solved.
I think I may have solved my problem. The relaunching of the finder is a good work around. I relaunched my finder, unmounted the EHD and then went to the disk Utility and repaired the unmounted disk. It took many hours (all night) to make the repairs but in the morning my problem was solved. Don't lose patience when it seems that nothing is happening with the disk repair. Set it and forget it and in the morning the problem may be solved.
Log into another user account and see if the problem persists there in Photos. (This tells us if the problem is limited to your user account or is system wide).
Also boot into Safe Mode (Use Safe Mode to isolate issues with your Mac) and test it there. Reboot normally and test again.
NOTE: Safe Mode boot can take up to 10 minutes as it's doing some system cache cleaning, volume verifying and directory repairing.
I am experiencing the same after upgrading to Catalina (10.15.2 in my case).
This problem seems to have been discussed earlier on these boards:
https://discussions.apple.com/thread/250724315
No solution was found, but to be honest, I think the Finder relaunch that you mention is a pretty good workaround. People facing this problem should resort to it until a fix comes along.
My time machine (not backing up), Photos Library (Photos not running), iTunes library (also not running). In fact I quit ever program and was still having the problem. I put the EHD on another computer with no problem.
I already tried it on a different computer running Catalina. The same issue occurred. I’ll try safe mode and see if that helps. My guess is that I’ll wind up having to reformat the back up drive. The disc utility suggested that I should back up the drive Thanks for your help so far.
What do you have on the EHD?
How is it formatted and connected to your iMac?
Are you running any Adobe image editing software and, if you are, do you have the scratch discs set to the EHD?
Also the Adobe image editing scratch disc is set to the Mac HD
I've now tried to boot in safe mode and it had no effect on the forever running, won't shut down EHD. There it goes again....
The finder won't stop accessing the external drive
