On Tue, Aug 23, 2011 at 5:21 PM, Bob Proulx <b...@proulx.com> wrote: > Tom H wrote: >> Bob Proulx wrote:
>>> For the new Grub2, I don't know. I haven't been able to learn it yet. >>> Perhaps someone else will be kind enough to step up and say what needs >>> to be done to install grub2 on a second disk. Probably just: >>> >>> grub-install /dev/sdb >> >> Correct. > > Oh good. Thanks for jumping in with information. You're welcome. >> And should work for grub1 too. > > But it doesn't work for grub1. I am hoping that it is improved with > grub2 but don't know. It works for grub1: http://www.gnu.org/software/grub/manual/legacy/grub.html#Invoking-grub_002dinstall And it also works with grub2 because it doesn't have a "grub" prompt so there's no other way of populating "/boot/grub" and installing grub2 to the MBR. > I have tried grub-install /dev/sdb with grub1 and it does not create a > bootable disk for me. I would need to set up a test case again to get > to the details but what seems to happen is that doing that with grub1 > somehow creates a configuration where it only works if the disk is > /dev/sdb. But if sda fails then on the reboot sdb rotates down to > become sda and won't boot displaying an early part of the grub boot > line but never getting to the grub boot menu. I remember once putting > in another dummy disk just to hold the sda position to force the raid > disk back to sdb and that enabled it to boot which caused me to > believe somehow it is configured requiring it to be sdb and failing to > work when it is sda. That problem is why it is necessary with grub1 > to specify the sdb device as (hd0) when issuing the grub setup > command. Then it is configured as sda and in the future when it is > sda it will boot. Both of these work - and have worked for me. The first is the one that most would agree is correct. As long as it works, I don't care. #!/bin/sh GRUB=/sbin/grub $GRUB --batch --no-floppy <<EOF 1>/dev/null 2>/dev/null device (hd0) /dev/sda root (hd0,0) setup (hd0) device (hd1) /dev/sdb root (hd1,0) setup (hd1) quit EOF #!/bin/sh GRUB=/sbin/grub $GRUB --batch --no-floppy <<EOF 1>/dev/null 2>/dev/null device (hd0) /dev/sda root (hd0,0) setup (hd0) device (hd0) /dev/sdb root (hd0,0) setup (hd0) quit EOF -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/CAOdo=SyfVUzj3qaGt51P-HG=-mcbv-kj86jxiocuesqzj8c...@mail.gmail.com
