From mboxrd@z Thu Jan 1 00:00:00 1970 From: "H. Peter Anvin" Subject: Re: switching root fs '/' to boot from RAID1 with grub Date: Thu, 01 Nov 2007 10:31:38 -0700 Message-ID: <472A0D7A.4040807@zytor.com> References: <20071030210721.386ca2fa@absurd> <1193781699.10336.585.camel@firewall.xsintricity.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1193781699.10336.585.camel@firewall.xsintricity.com> Sender: linux-raid-owner@vger.kernel.org To: Doug Ledford Cc: Janek Kozicki , linux-raid@vger.kernel.org List-Id: linux-raid.ids Doug Ledford wrote: > > device /dev/sda (hd0) > root (hd0,0) > install --stage2=/boot/grub/stage2 /boot/grub/stage1 (hd0) /boot/grub/e2fs_stage1_5 p /boot/grub/stage2 /boot/grub/menu.lst > device /dev/hdc (hd0) > root (hd0,0) > install --stage2=/boot/grub/stage2 /boot/grub/stage1 (hd0) /boot/grub/e2fs_stage1_5 p /boot/grub/stage2 /boot/grub/menu.lst > > That will install grub on the master boot record of hdc and sda, and in > both cases grub will look to whatever drive it is running on for the > files to boot instead of going to a specific drive. > No, it won't... it'll look for the first drive in the system (BIOS drive 80h). This means that if the BIOS can see the bad drive, but it doesn't work, you're still screwed. -hpa