macos first aid volume could not be unmounted

I got impatient so I stopped the process and looked online for other ways to backup without having to use Time Machine. I did as usual, but Time Machine would have the download bar loading for several minutes with a message saying 'Preparing the disk'. Today, I wanted to do another backup since I hadn't done one in a while. I used it throughout the year for sporadic backups with Time Machine, with no problem. She got the one for PC, but somehow I managed to be able to use it on my Macbook Air with some tweaking around. I'll try to explain my situation as concisely as possible.My mom got me a MyPassport by WD (an external hard drive plugged with USB cable) last year. The laptop from which I'm running Disk Utility is a MacBook Air (M1, 2020), using Mac OS 11.3.1.The external drive I want to erase is a LaCie 'Rugged' 1 TB Firewire drive, currently with GUID partition map and formatted as Mac OS Extended (Journaled).But if I select the 'Force Eject' option that does work just fine.

The volume on disk4 couldn’t be unmounted because it is in use by process 0 (kernel)įinal detail: unsurprisingly, ejecting the disk doesn't work. Looks like this:Įrasing “LaCie Rugged FW/USB Media” (disk4) and creating “LaCie” If, instead, I select the physical device instead of just the volume then First Aid runs just fine, I get no errors.īut I am still not able to erase, because of the unmount problem, regardless of whether I've selected the physical device or just the volume. Restoring the original state found as mounted. Running First Aid on “LaCieDrive” (disk4s2) If I have selected the Volume and run First Aid then I get the following: So I went to Disk Utility to run First Aid. trying to delete a file using Finder gives me an 'unexpected error' (code -50) if I go to the Terminal and try 'rm' then I get 'Invalid argument'. I cannot however rename or delete them (e.g. The drive does mount correctly, I can view files with no problems.

I want to erase my external hard drive, currently full of data from an old computer's Time Machine backups, but I'm not able to.

Macos first aid volume could not be unmounted