From owner-freebsd-hackers Mon Mar 3 02:50:53 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id CAA21107 for hackers-outgoing; Mon, 3 Mar 1997 02:50:53 -0800 (PST) Received: from sax.sax.de (sax.sax.de [193.175.26.33]) by freefall.freebsd.org (8.8.5/8.8.5) with SMTP id CAA21100 for ; Mon, 3 Mar 1997 02:50:49 -0800 (PST) Received: (from uucp@localhost) by sax.sax.de (8.6.12/8.6.12-s1) with UUCP id LAA09399; Mon, 3 Mar 1997 11:50:44 +0100 Received: (from j@localhost) by uriah.heep.sax.de (8.8.5/8.8.5) id LAA04823; Mon, 3 Mar 1997 11:23:56 +0100 (MET) Message-ID: Date: Mon, 3 Mar 1997 11:23:56 +0100 From: j@uriah.heep.sax.de (J Wunsch) To: rkw@dataplex.net (Richard Wackerbarth) Cc: hackers@freebsd.org Subject: Re: SCSI setup help !!! References: X-Mailer: Mutt 0.55-PL10 Mime-Version: 1.0 X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) In-Reply-To: ; from Richard Wackerbarth on Mar 3, 1997 00:53:08 -0600 Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk As Richard Wackerbarth wrote: > Everything seemed fine. It ask if I wanted to leave something to stay > compatible. > I said "yes". That's been your problem. :) No no, rather that you've got the geometry wrong. > However, when I try to reboot, I get told that I have no OS. > > I tried "disklabel -B sd0" and that did not help either. For sure, it wouldn't help. The only help short of a reinstall is to hand-tweak the fdisk table. Go through fdisk, pick the slice's starting block number, recompute the C/H/S number for whatever your BIOS thinks the geometry of the disk were, and enter this one. (It's probably an ``odd'' value, something starting ``in the middle'' of a track.) Enter some bogus but reasonable :) value for ending C/H/S, like 1023/63/255. This should get you going again. Keep Win95 or other poisoned systems away. The might consider this fdisk table invalid, and happily destroy `invalid' fdisk tables without warning or asking you. So in the end, you end up with an incompatible fdisk table the hard way :-), by also wasting more sectors than using ``DD'' mode in the first place... -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)