Thanks for the suggestions.

I ended up rebooting and the problem hasn't reappeared.
When it does, I'll give these a try.

On 07/27/14 14:30, JD wrote:
And (I forgot to mention), as superuser, run

umount -f /dev/sr0

before you blank it.



On Sun, Jul 27, 2014 at 3:30 PM, JD <[email protected] 
<mailto:[email protected]>> wrote:

    Well, also try

    lsof | egrep -i 'sr0|cdrom|dvd'




    On Sun, Jul 27, 2014 at 3:07 PM, Ed Greshko <[email protected]
    <mailto:[email protected]>> wrote:

        On 07/28/14 02:40, Michael Eager wrote:
         > I'm trying to use wodim to write or blank a cdrom.  When I execute
         >
         > $ sudo wodim dev=/dev/sr0 blank=all
         >
         > I get the following error:
         >
         > Error trying to open /dev/sr0 exclusively (Device or resource 
busy)... retrying
         >
         > The same thing happens when I use K3B.  It says it cannot get 
exclusive
         > control over the device.
         >
         > I can't find any process which is using /dev/sr0.  fuser returns 
nothing.
         >
         > Any idea how to find what is locking /dev/sr0, or how to allow wodim 
to
         > write to the CD?
         >

        I've not worked with optical disks in a long time....  But, what if you 
issue the same
        command without the "sudo"?

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