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Date: Wed, 29 Apr 2015 10:31:05 +0100
From: Frank Leonhardt <frank2@fjl.co.uk>
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Subject: Re: /cd0 held open but no files reported
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On 24/04/2015 20:12, Gary Aitken wrote:
> I have a situation I'd like some insights on...
>
> running 9.2 release on an AMD 64, X with xfce4
>
> I mounted a CD from root:
>    #mount -t cd9660 /dev/cd0 /cd0
> Accessed some files on the CD using gimp.
> Exited gimp
>
> When I try to umount, I get the message:
>    #umount /cd0
>    umount: unmount of /cd0 failed: Device busy
>
>

How about using gvfs-mount -u instead?

I've not had the pleasure of using Gnome on FreeBSD specifically, but as 
no one else has answered and given what gvfs mounting deamons seem to 
get up to, I'd be surprised if a kernel umount was ever going to work.