From owner-freebsd-questions Sun May 31 02:57:22 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id CAA29777 for freebsd-questions-outgoing; Sun, 31 May 1998 02:57:22 -0700 (PDT) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from relay.ucb.crimea.ua (relay.ucb.crimea.ua [194.93.177.113]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id CAA29752 for ; Sun, 31 May 1998 02:56:45 -0700 (PDT) (envelope-from ru@ucb.crimea.ua) Received: (from ru@localhost) by relay.ucb.crimea.ua (8.8.8/8.8.8) id MAA26925; Sun, 31 May 1998 12:56:17 +0300 (EEST) (envelope-from ru) Message-ID: <19980531125617.A26780@ucb.crimea.ua> Date: Sun, 31 May 1998 12:56:17 +0300 From: Ruslan Ermilov To: Greg Lehey , walton@nordicdms.com, freebsd-questions@FreeBSD.ORG Cc: mike@smith.net.au Subject: Re: fdisk slice oddities Mail-Followup-To: Greg Lehey , walton@nordicdms.com, freebsd-questions@FreeBSD.ORG, mike@smith.net.au References: <199805140024440448.02FAF632@mailgate.execpc.com> <19980530073409264.AAA277@mail.nordicdms.com> <19980530185741.K20360@freebie.lemis.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.91i In-Reply-To: <19980530185741.K20360@freebie.lemis.com>; from Greg Lehey on Sat, May 30, 1998 at 06:57:41PM +0930 X-Operating-System: FreeBSD 2.2.6-STABLE i386 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sat, May 30, 1998 at 06:57:41PM +0930, Greg Lehey wrote: > > Dedicated mode. It's not only not dangerous, it's safer than > non-dedicated mode. I don't think so, at least after my last -stable installation. Interesting, what Mike Smith says about dedicated mode: msmith> "Dangerously dedicated" should probably be called "stupidly dedicated". msmith> It is almost never a better idea to use this mode than the "normal" msmith> mode. | From: Mike Smith | To: Ruslan Ermilov | Date: Sat, 30 May 1998 11:45:36 -0700 | Subject: Re: Problem installing 2.2.6 in dangerously dedicated mode | | > Yesterday I tried to install FreeBSD 2.2.6-STABLE on the following hardware: | > | > Intel X-Series Deskside/MX Server (P90, 64Mb of ram) | > PhoenixBIOS(TM) E486 Version 1.00.19.AM0 | > aic7770 on-board SCSI (Bios v2.11 S3) | > Seagate ST32155N (2Gb, 2049/64/32 in Adaptec's >1G geometry translation mode) | > | > This machine intended for use only with FreeBSD and will act as an ip-router | > and dialup access server via ppp. | > | > So, as always, I started to install FreeBSD in `dangerously-dedicated' mode. | > The installation process was smooth, but after it has finished and rebooted, | > I got ``Read error'' message from FreeBSD bootblocks (start.S, I think?). | | "Dangerously dedicated" should probably be called "stupidly dedicated". | It is almost never a better idea to use this mode than the "normal" | mode. | | > Then I read the section 8.10 of the FAQ about dangerously dedicated mode, | > in particular, about HP Netservers' BIOS weirdness, then I read the | > README.386BSD and README.MACH from sys/i386/boot/biosboot, and now I have | > a few questions: | > | > 1. When ``sysinstall'' first runs, what disk geometry it detects? | > What the system bios tells or SCSI bios or ...? | | The geometry source varies depending on the disk and the data on the | disk. The BIOS geometry may be used, as may the geometry in the MBR on | the disk, as may the geometry from a hardware probe. | | > 2. From what I've read in README.386BSD, when I install FreeBSD in DD mode: | > | > | Boot 1 also contains a compiled in DOS partition table | > | (in case it is at block 0), which contains a 386bsd partition starting | > | at 0. This ensures that the same code can work whether or not | > | boot1 is at block 0. | > | > What this table looks like, I wonder? | > Any good pointer to the source code in sys/i386/*boot will be satisfied ;-) | | at the bottom of start.S | | -- | \\ 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 -- Ruslan Ermilov System Administrator ru@ucb.crimea.ua United Commercial Bank +380-652-247647 Simferopol, Crimea 2426679 ICQ Network, UIN To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message