Penguin

Device or Resource Busy

An attempt to access or modify something failed as it is already in use. Probably the most common reason for seeing this is trying to unmount a disk partition while processes have open file descriptors on that device.

Eg
$ mount /dev/fd0 /floppy $ cd /floppy

(your shell now using the floppy disk)

$ umount /floppy umount /floppy: device is busy

If you want to find out why a disk is busy

fuser -vm /floppy

will list the processes that are using that disk :)

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  • KaiHennig
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