When I ran the command
umount /dev/mapper/ubuntu--gnome--vg-root
I I got :
umount: /: target is busy
(In some cases useful info about processes that
use the device is found by lsof(8) or fuser(1).)
I tried some different options with the command lsof
and fuser
, but it didn't work so far.
Does anyone have any idea how to resolve this issue?