usb drive not detaching

[Michael C. Thorogood]

Asko Kauppi wrote:

>
> Does anyone else have problems with Ubuntu (warty) and USB drives?
>
> When plugging in, the drive automatically shows up on desktop as 
> 'sda1' (I think).  Works well, albeit a bit slow perhaps.  But at 
> detact time (I take 'detach volume' with the right button menu) it 
> gives an error (unable to detach, device busy).  If I still remove the 
> drive, things might or might not be in order.
>
> Who's using this volume, since I'm not?  Doing 'sync' does not change 
> the situation.  What can I do?
>
> -ak
>
>
Say "umount -l  /dev/sda1" from a terminal.  I have a USB zip drive  
that has to  be unmounted with the 'lazy' option.  See the man page for 
umount.

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