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. > 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. 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.a Bob
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