Comment 13 for bug 81239

Revision history for this message
nasos (nasos-i) wrote : Re: Cannot unmount volume: not very helpful error message

I have the same problem. But unfortunately couldn't umount my usb either with umount ....

In my case the problem is Beagle. That for some reason runs on the devices. Here is what works for me:

This will list all processes running on usbdisk:
sudo lsof | grep /media/usbdisk

The output in my case is:
beagled-h 6160 nasos 48r REG 8,17 192000 54791 /me......

Next I kill beagled - helper (proccess 6160 in here) :

sudo kill -9 6160

and then I just unmount.

 sudo umount /media/usbdisk

I don't know what effects to beagle this might have.