On Sat, Sep 3, 2011 at 5:17 AM, Robin Hill <robin@xxxxxxxxxxxxxxx> wrote: > On Sat Sep 03, 2011 at 04:35:39 -0700, Simon Matthews wrote: > >> On Fri, Sep 2, 2011 at 8:42 AM, Timothy D. Lenz <tlenz@xxxxxxxxxx> wrote: >> > >> >> >> >> How did you install Grub on the second drive? I have seen some >> >> instructions on the web that would not allow the system to boot if the >> >> first drive failed or was removed. >> >> >> > >> > >> > I think this is how I did it, at least it is what I had in my notes: >> > >> > grub-install /dev/sda && grub-install /dev/sdb >> > >> > And this is from my notes also. It was from an IRC chat. Don't know if it >> > was the raid channel or the grub channel: >> > >> > [14:02] <Jordan_U> Vorg: No. First, what is the output of grub-install >> > --version? >> > [14:02] <Vorg> (GNU GRUB 1.98~20100115-1) >> > [14:04] <Jordan_U> Vorg: Ok, then run "grub-install /dev/sda && grub-install >> > /dev/sdb" (where sda and sdb are the members of the array) >> > >> >> Which is exactly my point. You installed grub on /dev/sdb such that it >> would boot off /dev/sdb. But if /dev/sda has failed, on reboot, the >> hard drive that was /dev/sdb is now /dev/sda, but Grub is still >> looking for its files on the non-existent /dev/sdb. >> > The way I do it is to run grub, then for each drive do: > device (hd0) /dev/sdX > root (hd0,0) > setup (hd0) > > That should set up each drive to boot up as the first drive. > How about (after installing grub on /dev/sda): dd if=/dev/sda of=/dev/sdb bs=466 count=1 Simon -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
