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Can't umount cdrom - Printable Version

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Can't umount cdrom - hijinks - 2003-12-16


Every wonder why sometimes you get this message when you try to un-mount a NFS drive or cdrom drive

 



Code:
root@homer:~# umount /mnt/cdrom umount: /mnt/cdrom: device is busy umount: /mnt/cdrom: device is busy root@homer:~#




 

Well chances a process is running that is using that directory. To find out run

 



Code:
root@homer:~# fuser -m /mnt/cdrom/ /mnt/cdrom/:         24066c




 

That shows you what process is using that directory. Now lets do a ps aux and see whats running

 



Code:
root@homer:~# ps aux | grep 24066 root     24066  0.0  0.5  2244 1284 pts/10   S    14:04   0:00 -su root@homer:~#




 

 

Looks like a the root user is in that directory. If you cannot find the term that is in that directory then kill that process

 



Code:
root@homer:~# kill 24066 root@homer:~#




 

 

now you can un-mount

 



Code:
root@homer:~# umount /mnt/cdrom/ root@homer:~#




 

This tip brought to you by the letter J and the letter Y



Can't umount cdrom - robbin - 2009-10-06

Hi there, thanks in advance. :)