From owner-freebsd-current Mon Jul 6 08:50:39 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id IAA28473 for freebsd-current-outgoing; Mon, 6 Jul 1998 08:50:39 -0700 (PDT) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from antipodes.cdrom.com (castles315.castles.com [208.214.167.15]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id IAA28458 for ; Mon, 6 Jul 1998 08:50:31 -0700 (PDT) (envelope-from mike@antipodes.cdrom.com) Received: from antipodes.cdrom.com (localhost [127.0.0.1]) by antipodes.cdrom.com (8.8.8/8.8.5) with ESMTP id IAA03457; Mon, 6 Jul 1998 08:50:25 -0700 (PDT) Message-Id: <199807061550.IAA03457@antipodes.cdrom.com> X-Mailer: exmh version 2.0zeta 7/24/97 To: Andrzej Bialecki cc: freebsd-current@FreeBSD.ORG Subject: Re: FreeBSD in less than 4MB RAM In-reply-to: Your message of "Mon, 06 Jul 1998 10:32:14 +0200." Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 06 Jul 1998 08:50:24 -0700 From: Mike Smith Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > Hi, > > This is slightly more general question than in the Subject. > > First issue is: what would it take to squeeze any useful combination of > kernel, init plus two-three (small) user programs in 4MB? Which > (dispensable) parts of the kernel require so much space? After removing > all I could think of (leaving FFS, fd0, and ed0, though) the kernel size > is still about 700kB big, and quite another question is how this > translates into running size... try "du *.o | sort -n" in your compile directory. > The second issue is this: currently we're unable to boot (using BIOS) and > mount as / other filesystems than FFS, NFS and CD9660. It would be great > if we could use MSDOSFS as well (using special version of biosboot, with > FAT support compiled-in instead of FFS). Device nodes would be on DEVFS. All you have to do is add the mountroot stuff to MSDOSFS - nobody would complain if you did. > What for? This could help get rid of fbsdboot.exe and related troubles - > we could just directly start and run (and install!) on MSDOS partition. Permissions would suck. -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message