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Re: Why umount -A is a really bad idea


On Wed, 25 Aug 2004, Mike wrote:

> On Wed, 25 Aug 2004, Colin JN Breame wrote:
> 
> > I tried this once, just to see what would happen.  I then spent the 
> > next hour restoring the mount points.  I've learnt a valuable 
> > lesson...
> 
> Why would a 'mount -a' not work after your 'umount -a' to restore the 
> mounts?
> 
> Mike

Because Cygwin's mounts aren't the same as Unix mounts.  The mount and 
umount commands on Cygwin modify the mount table directly, so that a 
umount really is permanent.  However (and this concerns the OP, too), you 
can save the mount table as the output of "mount -m", which you can later 
use to restore the mounts.

For those unfortunate enough to have done a "umount -a" without saving the 
mounts via "mount -m", the minimum necessary mounts for Cygwin to work are

mount -sbc /cygdrive
mount -fsb c:/cygwin /
mount -fsb c:/cygwin/bin /usr/bin
mount -fsb c:/cygwin/lib /usr/lib

(that is provided that you installed Cygwin in c:/cygwin).
	Igor
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     |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski, Ph.D.
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"Happiness lies in being privileged to work hard for long hours in doing
whatever you think is worth doing."  -- Dr. Jubal Harshaw

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