jyrki@jyrki-desktop:~$ rmmod usb-storage
ERROR: Module usb_storage is in use
jyrki@jyrki-desktop:~$ sudo umount /dev/sr1
[sudo] password for jyrki:
umount: /dev/sr1: not mounted
jyrki@jyrki-desktop:~$ sudo rmmod usb-storage
ERROR: Module usb_storage is in use
jyrki@jyrki-desktop:~$ sudo modprobe -r usb-storage
FATAL: Module usb_storage is in use.
jyrki@jyrki-desktop:~$ sudo umount /dev/sr1
umount: /dev/sr1: not mounted
jyrki@jyrki-desktop:~$ sudo umount /dev/sr1
umount: /dev/sr1: not mounted
jyrki@jyrki-desktop:~$ sudo modprobe -r usb-storage
FATAL: Module usb_storage is in use.
jyrki@jyrki-desktop:~$
jyrki@jyrki-desktop:~$
jyrki@jyrki-desktop:~$ sudo umount /dev/sr1
umount: /dev/sr1: not mounted
jyrki@jyrki-desktop:~$ sudo modprobe -r usb-storage
FATAL: Module usb_storage is in use.
jyrki@jyrki-desktop:~$ sudo rmmod usb-storage
ERROR: Module usb_storage is in use
jyrki@jyrki-desktop:~$