If you want unmount a partition and get a message ” device is busy ” type:
#~ fuser -vu mountpoint
( replace mountpoint with your real mountpoint )
The system will respond with one or more process pid(s)
You can send then a kill or a kill -9 if needed to stop
the process and unmount your partition.
Tags: bugging unmount, busy device, howto unmount a device, umont, unmount