Path: utzoo!attcan!uunet!mcvax!hp4nl!botter!star.cs.vu.nl!ast
From: ast@cs.vu.nl (Andy Tanenbaum)
Newsgroups: comp.os.minix
Subject: Re: /etc/umount & /etc/update
Message-ID: <1830@ast.cs.vu.nl>
Date: 20 Dec 88 12:26:23 GMT
References: <5982@louie.udel.EDU>
Reply-To: ast@cs.vu.nl (Andy Tanenbaum)
Organization: VU Informatica, Amsterdam
Lines: 12

In article <5982@louie.udel.EDU> csrobe@cs.wm.edu (Chip Roberson) writes:
>Can someone please explain to me why umount thought /dev/at0 was busy.

/etc/mount and /etc/umount keep track of what is mounted in /etc/mtab.
That file just contains strings.  If you type:
   /etc/mount /dev/fd0 /usr
   /etc/umount /dev/at0

the mount system call will work and it will unmount, but /etc/mtab will be
messed up.  I suspect something like this happened.

Andy Tanenbaum (ast@cs.vu.nl)