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Date: Tue, 22 Aug 2000 11:33:27 -0400
Message-Id: <200008221533.LAA21789@envy.delorie.com>
From: DJ Delorie <dj AT delorie DOT com>
To: starksb AT ebi DOT ac DOT uk
CC: cygwin-developers AT sources DOT redhat DOT com
In-reply-to: <9817-Tue22Aug2000162730+0100-starksb@ebi.ac.uk> (message from
	David Starks-Browning on Tue, 22 Aug 2000 16:27:30 +0100)
Subject: Re: latest/README (Was: latest/setup.exe)
References: <7003-Tue22Aug2000144506+0100-starksb AT ebi DOT ac DOT uk>
	<200008221450 DOT KAA21398 AT envy DOT delorie DOT com>
	<6741-Tue22Aug2000160755+0100-starksb AT ebi DOT ac DOT uk> <9817-Tue22Aug2000162730+0100-starksb AT ebi DOT ac DOT uk>


> > WARNING: If you are upgrading from an old version of cygwin, unmount
> > all your old mount points and back up your old installation before
> > upgrading.  YOUR OLD MOUNTS WILL BE OVERWRITTEN if you do not do this.
> 
> It doesn't apply any more, does it?  Doesn't the new setup observe
> existing mounts?

Some but not all.  It unmounts the "standard" mount points (/ /usr
/usr/{bin,lib} /var /lib /bin /etc) and remounts (/ /usr/bin /usr/lib)
according to the user's choices.  If you have a really old
installation you're installing over, you probably want to either back
it up or install elsewhere, just in case, but the new setup is better
than the old one at handling those situations.

One example of where it "breaks" is if you use a symbolic link for a
standard directory (like tmp -> /cygdrive/c/windows/temp), because the
built-in tar just isn't that smart.  It will remove the symlink and
create a real directory in its place.