install grub on LVM 2007-09-18 - By Bob McClure Jr
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On Tue, Sep 18, 2007 at 06:28:47PM -0500, Fred Grant wrote:
> On Tue, 2007-09-18 at 16:23 -0500, Bob McClure Jr wrote:
> > On Tue, Sep 18, 2007 at 04:10:37PM -0500, Fred Grant wrote:
> > > On Tue, 2007-09-18 at 10:02 -0500, Bob McClure Jr wrote:
> > > > On Tue, Sep 18, 2007 at 06:39:20AM -0500, Fred Grant wrote:
> > > > > I want to install grub on hd1 boot partition which is LVM.
> > > OK it's not LVM, it's ext3. I must have been looking at swap.
> > > >
> > > > hd1? Do you mean hda? Or hda1?
> > > > hda1
> > > > I didn't think you could boot LVM partitions. Let's be clear on this.
> > > > An LVM partition is somewhat like an extended partition in that it
> > > > does not contain any kind of filesystem. It does, however, contain
> > > > one or more logical volumes each of which which may contain a
> > > > filesystem.
> > > >
> > > > Customarily, there is (at least) one plain linux partition with an
> > > > ext[23] filesystem on it, which is designated as the /boot partition.
> > > > You will likely have another partition, type LVM, which contains one
> > > > or more logical volumes containing filesystems for /, /home, etc.
> > > > Still, you would normally install grub on the MBR of that disk, e.g.,
> > > > for /dev/hda
> > > >
> > > > grub-install /dev/hda
> Maybe I should do: grub-install /dev/hdb?
> > > I did this and result is indicated below.
> >
> > While booted to FC5? If so, show us the grub.conf for that system.
> This is from /etc/grub.conf. It looks the same in /boot.
> -- ---- ------
> # From hda1
> # New Fedora5 on hda
> # 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/VolGroup00/LogVol00
> # initrd /initrd-version.img
> #boot=/dev/hda
> default=0
> timeout=10
> splashimage=(hd0,0)/grub/splash.xpm.gz
>
> title Fedora Core (2.6.18-1.2239.fc5)
> root (hd0,0)
> kernel /vmlinuz-2 (See http://nuz-2.ora-code.com).6.18-1.2239.fc5 ro root=/dev/VolGroup00/LogVol00 rhgb
> quiet
> initrd /initrd-2 (See http://trd-2.ora-code.com).6.18-1.2239.fc5.img
>
> title Fedora Core (2.6.20-1.2320.fc5)
> root (hd0,0)
> kernel /vmlinuz-2 (See http://nuz-2.ora-code.com).6.20-1.2320.fc5 ro root=/dev/VolGroup00/LogVol00 rhgb
> quiet
> initrd /initrd-2 (See http://trd-2.ora-code.com).6.20-1.2320.fc5.img
> -- ------
>
> >
> > > > Care to share a bit more information about your desired setup?
> > > -- ---- ----
> > > fdisk:
> > > Disk /dev/hda: 30.7 GB, 30750031872 bytes
> > > 255 heads, 63 sectors/track, 3738 cylinders
> > > Units = cylinders of 16065 * 512 = 8225280 bytes
> > >
> > > Device Boot Start End Blocks Id System
> > > /dev/hda1 * 1 13 104391 83 Linux
> > > /dev/hda2 14 3738 29921062+ 8e Linux LVM
> > >
> > > Disk /dev/hdb: 61.4 GB, 61492838400 bytes
> > > 255 heads, 63 sectors/track, 7476 cylinders
> > > Units = cylinders of 16065 * 512 = 8225280 bytes
> > >
> > > Device Boot Start End Blocks Id System
> > > /dev/hdb1 * 1 7288 58540828+ 83 Linux
> > > /dev/hdb2 7289 7476 1510110 5 Extended
> > > /dev/hdb5 7289 7476 1510078+ 82 Linux swap /
> > > Solaris
> > >
> > > Disk /dev/dm-0: 29.5 GB, 29527900160 bytes
> > > 255 heads, 63 sectors/track, 3589 cylinders
> > > Units = cylinders of 16065 * 512 = 8225280 bytes
> > >
> > > Disk /dev/dm-0 doesn't contain a valid partition table
> > >
> > > Disk /dev/dm-1: 1073 MB, 1073741824 bytes
> > > 255 heads, 63 sectors/track, 130 cylinders
> > > Units = cylinders of 16065 * 512 = 8225280 bytes
> > >
> > > Disk /dev/dm-1 doesn't contain a valid partition table
> >
> > The above two errors can be ignored.
> >
> > > -- ---- ---- ------
> > > Per the above, I have F5 installed on hda and Ubuntu live cd on
> > > hdb.
Well, duh. It just occurred to me. Most systems are set up to boot
the CD first, if it's in the drive. Eject it and see if it doesn't
boot your FC5 installation.
> > > In
> > > BIOS I select "boot from HDD1" and boot fails. If I select "boot from
> > > HDD2", boot succeeds. Is it possible that BIOS considers hda to be
> > > HDD2?
> >
> > Could be. The BIOS will tell you.
> >
> > > Can it be toggled?
> >
> > In most recent machines, yes. Look in the BIOS under something like
> > Boot Order or drive swapping. Rick has a lot more experience with
> > that and can probably tell you exactly.
> >
> > > I don't play around with BIOS much because it
> > > scares me.
> > > >
> > > > >
> > > --
> > > Fred
> >
> > Cheers,
Cheers,
--
Bob McClure, Jr. Bobcat Open Systems, Inc.
bob@(protected) http://www.bobcatos.com
When words are many, sin is not absent, but he who holds his tongue is
wise. Proverbs 10:19 (NIV)
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