Jaroslaw Polok wrote:
>
> There is no standalone program (well, a one that you
> could run just for this purpose): the rescue
> functionality is defined in the rescue.py script in
> anaconda (which does device detection, filesystem label
> scanning .. etc).
> 
> You should be able to unmount /mnt/sysimage
> whether it is in ro or rw mode: but first you will
> probably need to unmount what is mounted 'below',
> ie for example:
> 
> df shows:
> 
> /dev/mapper/VolGroup00-LogVol00	/mnt/sysimage
> /dev/hda1                       /mnt/sysimage/boot
> 
> in above example you will need to unmount /mnt/sysimage/boot
> before unmounting /mnt.sysimage


I unmounted both /mnt/sysimage/boot and /mnt/sysimage/dev, leaving no mount "below" 
/mnt/sysimage, but still /mnt/sysimage refuses to unmount.