I don't think this is a huge issue as it doesn't cause visible crush or even error in syslogs but yet it'd be nice to know the reason. The only thing I was able to find were on Arch/Manajaro forums and the suggested workaround is to modify a file that doesn't esxist in Ubuntu: /etc/nf # /boot/efi was on /dev/nvme0n1p1 during installation # / was on /dev/nvme0n1p3 during installation I cannot find anything related using journalctl or logs, the only thing I've found is: abr 23 22:24:36 vanburen07-G5-5590 sudo: vanburen07 : TTY=pts/0 PWD=/home/vanburen07 USER=root COMMAND=/bin/umount /oldroot/dev/pts

Sometimes it's visible on the screen, sometimes it's covered by the splash. Error: Command failed: hdiutil detach /Volumes/MyApp hdiutil: couldn't unmount 'disk2' - Resource busy npm ERR code ELIFECYCLE npm ERR errno 1 npm ERR myapp1.22.2 installer:macos: create-dmg. After Upgrading from 18.04 to 20.04 I've notices several warnings during shutdown or reboot like: Failed to unmount /oldroot: Device or Resource busyįailed to unmount /oldroot/dev/pts: Device or Resource busyįailed to unmount /oldroot/dev: Device or Resource busyįailed to unmount /oldroot/sys: Device or Resource busy Question: Q: Could not unmount volume '/' (Resource busy) I am trying to mount a back up of my HD but keep getting the message: Could not unmount volume '/' (Resource.

Could not unmount disk resource busy