Code:
# chroot.sh
......
# fuser /dev
# exit
umount: /mnt/base-us/root/dev: device is busy
umount: /mnt/base-us/root/dev: device is busy
umount: /mnt/base-us/root: device is busy
umount: /mnt/base-us/root: device is busy↧
device is busy!
↧