On Wednesday 09 December 2009, Bill Davidsen wrote:
Gene Heskett wrote:
> Greets;
>
> Resend as there has been no reply, with added info.
>
> I finally said to hell with it and let F12 install itself on /dev/sdb
> with all its defaults.
>
> I was surprised on the reboot when my usual grub menu from
> /dev/sda was all that showed up, no mention of an F12 install at all.
>
> Added: I had it install everything in the options list, but gave it only
> /dev/sdb to play with in the available disks menu's, & use the defaults
> on /dev/sdb, so it made a 100 meg /boot, using ext4, and a logical
> volume out of the rest of the drive. I have NDI how to query the
> filesystem used there, other than trying to mount /dev/sdb1 as ext3
> fails.
>
> So, since I had blown away a centos install to put F12 on /dev/sdb, I
> carved up a fresh grub stanza that reads like this and added it to
> /dev/sda1/grub/grub.conf:
>
> # grub.conf generated by anaconda
> #
> # Note that you do not have to rerun grub after making changes to this
> file # NOTICE: You have a /boot partition. This means that
> # all kernel and initrd paths are relative to /boot/, eg.
> # root (hd0,0)
> # kernel /vmlinuz-version ro root=/dev/sdb3
> # initrd /initrd-version.img
> #boot=/dev/sda
> default=19
> fallback=1
> timeout=15
> splashimage=(hd0,0)/grub/splash.xpm.gz
>
> [...]
>
> #21 new stanza
> title Fedora 12 (2.6.31.6-162.fc12.x86_64 from dev/sdb)
> root (hd1,0)
> kernel /vmlinuz-2.6.31.6-162.fc12.x86_64 ro root=/dev/mapper/vg_coyote-
> lv_root LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc
> KEYTABLE=us rhgb quiet
> initrd /initramfs-2.6.31.6-162.fc12.x86_64.img
>
> which is in fact pasted from the /dev/sdb1/grub/grub.conf except for the
> initial "root (hd1,0)" statement.
>
> So it looks as if I might have to 'chainloader +1 ' it instead, so how
> do I do that? I've never done that before.
>
> Also, that /dev/sdb1 partition only mounts as ext4 if that is important.
>
> Added: I experimentally added a 'chainloader+1' as the next line after
> the root (hd1,0) in the /dev/sda1/grub/grub.conf, but all that seemed to
> do was add another 10 second delay before I get the error 13 message. I
> would have thought from what little I know about grub, that this should
> force a reload, effectively a grub restart, from the mbr of /dev/sdb. Is
> there something I need to change in the /dev/sdb1/grub/grub.conf also?
If you don't get an answer sooner, when I go to the part of the building
where my laptop sits I'll check the stanza I used, as it still has a
fallback fc10 present. In the meantime, you can try booting off sdb, using
(typically) the F12 key to enter the boot manager. I suspect the boot info
is in the MBR of sdb.
Well, according to the files present on /dev/sdb1, grub is installed. I
tried the chainloader+1, didn't work, now I'm about to reboot and try the map
syntax to swap the bios drive orders.
Thanks Bill.
--
Cheers, Gene
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