umount error. cannot unmount usb disk

[Smoot Carl-Mitchell]

On Sat, 2008-09-06 at 21:30 +0200, Zhengguo Xu wrote:

> 2. lsof | grep -i /media/disk gives following infomation: 
> 
> evince-th 10813   MYNAME    6r      REG       8,37 100095672
> 2359648 /media/disk/Miscellaneous/Literature/ABCD.pdf (deleted)
> 
> what does that mean? (i changed info about myname and ABCD.pdf, the
> rest is exact what output of the command)
> 
> is this the application that prevent the unmounting? however, i didn't
> open any pdf viewing software. i also stopped the process evince
> before unmounting. in fact, i turned off every application i could
> think of.

10813 is the process id of the process using the file on the disk.  Try:

kill 10813

If that does not work try:

kill -9 10813

-- 
Smoot Carl-Mitchell
System/Network Architect
smoot at tic.com
+1 480 922 7313
cell: +1 602 421 9005