Tente fazer umount -a
dentro do ambiente chroot
; Em seguida, saia e umount -l
se umount -R
falhar.
(chroot) # umount -a
(chroot) # exit
(liveos) #
(liveos) # umount -R /mnt/point/
(liveos) # umount -l /mnt/point/
-R, --recursive
Recursively unmount each specified directory. Recursion for each directory will stop if any unmount
operation in the chain fails for any reason. The relationship between mountpoints is determined by
/proc/self/mountinfo entries. The filesystem must be specified by mountpoint path; a recursive
unmount by device name (or UUID) is unsupported.
-l, --lazy
Lazy unmount. Detach the filesystem from the file hierarchy now, and clean up all references to this
filesystem as soon as it is not busy anymore. (Requires kernel 2.4.11 or later.)