umount: /media/cdrom0: device is busy

[infoseeker]

I am OFTEN unable to umount / eject a cd from the drive. The worst is when I am looking for something on a number of cd's and this problem rears its nasty head
I keep getting the same error :

umount: /media/cdrom0: device is busy
umount: /media/cdrom0: device is busy
Please check that the disk is entered correctly.

Any information as to how to solve this irritating problem would be much appreciated.
I close ALL windows under KDE (3.3.2) and attempting to 'umount' / 'eject' under Console or Root Console I get these errors
The only way I can eject the cd is to log off (out of KDE) and log back on again.

[Samoth]

I get these messages when i am looking at the contents of a CD and try to unmount

[smith88]

I've had the same problems are you, only with other distros like Mandriva. Basically there's not much you can do about it, probably the most likely cause is that a program is sitting in the background still holding an open lock on a file or something really trivial.

You can probably just try removing the disk. While it is poor practice it might be the only thing you can do.

[junkman4547]

try install "eject" .....

#apt-get install eject

that might solve your eject problem.

[drakebasher]

I don't have enough experience in Debian to have seen this problem, but in Fedora I do some or all of the following:

Close any file managers and of course any other windows that show the Cd or whatever.
Wait half a minute or so
And if umount doesn't work for the normal user, do 'umount -l' as root user (that's a lower-case "L" for "lazy"). Almost always works....

[DoctorDan]

'cd ~' then umount

[porkoboe]

one way around this is to use

umount -l <mounted fs ie /mnt/cdrom0>

the -l unlinks /mnt/cdrom0 from fstab, at which point any apps
with a lock on this directory cannot access it anymore.

umount will then unmount the device normally

this is the way i use to get around the "device is busy" thing

meh. just read the man pages for umount it will give a better explanation

[porkoboe]

(ugh) apologies DrakeBasher. you already explained that 2 posts above.

Sorry to anyone who had to read the same suggestion twice.

Linux is confusing enough without having to read my dumbass posts.

[praka123]

in debian,it often happens.just try to find out what is preventing umount by issuing

lsof |grep /dev/cdrom

In my case,i found "famd" is responsible for that!

[shade36]

I was having the same problem.

cd ~
umount

Fixed it right up.
Thanks DoctorDan.