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umount: /mnt/XXXX: device is busy

Are your tired of those nasty messages telling you can’t umount /mnt/cdrom?

Well here goes a little trick…

lsof | grep /mnt/cdrom

This will output the process(es) that are using the device. Now stop or kill the process and you are done.

There are another approach to this question, but let’s see if you have ideas on this…

This entry was posted on Monday, May 12th, 2003 at 11:34 am and is filed under Tips and Tricks. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

2 Responses to “umount: /mnt/XXXX: device is busy”

  1. Anonymous says:
    07/06/2003 at 11:36 am

    You also could try something like this…

    fuser -muv /mnt/cdrom

    which will list each account, PID, etc using the device mounted on /mnt/cdrom.

  2. Anonymous says:
    19/09/2003 at 11:50 pm

    This will also do the trick:

    kill -9 `lsof -t /dev/cdrom`
    umount /dev/cdrom
    eject

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