From owner-freebsd-questions Fri Apr 12 0: 7:56 2002 Delivered-To: freebsd-questions@freebsd.org Received: from dns.perimeter.co.za (dns.perimeter.co.za [196.25.164.254]) by hub.freebsd.org (Postfix) with ESMTP id 9208337B41A for ; Fri, 12 Apr 2002 00:07:50 -0700 (PDT) Received: from PATRICK (loopback.mipjhb [209.212.102.245] (may be forged)) by dns.perimeter.co.za (8.11.1/8.11.1) with SMTP id g3C76oL42086; Fri, 12 Apr 2002 09:06:51 +0200 (SAST) (envelope-from bsd@perimeter.co.za) Message-ID: <008e01c1e1f0$5a7014e0$b50d030a@PATRICK> From: "Patrick O'Reilly" To: "Peter Leftwich" Cc: "Mike Meyer" , "mpd" , "FreeBSD Questions" References: <20020411200205.B76458-100000@earl-grey.cloud9.net> Subject: Re: MBR, mfsroot.flp, handbook, and list fail me, partially... Date: Fri, 12 Apr 2002 09:04:52 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4522.1200 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4522.1200 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG ----- Original Message ----- From: "Peter Leftwich" > Can a command similar to 'boot0cfg -B ad0' be issued effectively while > logged in regularly to the box, as root, or must I boot to a floppy? I have done so (run these commands while in normal multi-user mode) without ill effect. But, I had the luxury of doing it on a PC where no-one else was busy. Anyway, I got the feeling that it was safe because there were no warnings to the contrary :) I seem to recall that the man page indicated that the -B option would replace the boot manager code (the boot program), but it does not touch the existing partition tables, etc. Do, it *should* be safe. > Is there any risk of munging an entire system when tossing around fdisk and > bootcfg commands? Do I have to "relabel" slices as bootable in > /stand/sysinstall or just use `fdisk -B [device containing Fbsd OS here]` ? Well, if there is risk, it did not bite me :) No harm in being cautious though. Mike might have a more authoritative answer here. I did not need to make any changes to the slices/labels/etc. It would appear that the boot code is smart enough to see all the slices, and present them in the boot menu automatically. I guess if you are "demoting" to autoboot, and there is more than one partition available, then you might want to first make sure the one you want to autoboot is marked as "active" ?!? > He-he, I remember good ol' PEBKAC, haven't seen PEBKAC since May 1995! :) You havn't seen me ! > Thanks for continued assistance, hugely desired... Hey - I've had so much assistance from this community, I try to give back if I can. Regards, Patrick O'Reilly. ___ _ __ / _ )__ __ (_)_ __ ___ _/ /____ __ / __/ -_) _) / ~ ) -_), ,-/ -_) _) /_/ \__/_//_/_/~/_/\__/ \__/\__/_/ http://www.perimeter.co.za To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message