[svlug] Grub2 dual boot Linux

kevin dankwardt kevin.dankwardt at gmail.com
Tue Nov 3 14:47:23 PST 2015

I am wondering if because your new root partition is LVM that is causing an
issue since it's not just a simple device file with a simple filesystem.
Perhaps booting with rdinit=/bin/sh and seeing if you can mount the F22 RFS
may be a clue.

On Tue, Nov 3, 2015 at 2:34 PM, Sarah Newman <newmans at sonic.net> wrote:

> The kernel and initramfs for fedora 22 should be located where fedora 22
> is going to update them, not manually copied. If you must have separate
> /boot
> partitions, maybe try chain-loading the config file with the configfile
> directive. You may have to manually fix the "set root=" directive.
> Have you tried booting by label or partition instead of UUID?
> On 11/03/2015 01:47 PM, Michael Eager wrote:
> > I installed a new SSD in my workstation and installed
> > Fedora 22 on the new drive from a Fedora Live DVD.  The new
> > SSD has a separate /boot partition and the root partition is in an LVM.
> >
> > When I reboot, the workstation boots back to the old Fedora 18
> > system, with no menu entry for the new F22 system.  I ran
> > grub2-install and it updated grub2.cfg with the F22 install,
> > using os-prober.  I did have to update device.map to include
> > both the boot drive (hd0,/dev/sda) and the new SSD (hd2,/dev/sdc).
> > I also copied the initrd and vmlinux from the new SSD /boot
> > partition to the original /boot partition.
> >
> > When I try to boot F22, it mounts a partition from a different
> > LVM on a different disk (/dev/sdb) as /sysroot and then dies
> > in switch-root because it doesn't contain root file system.
> > I've checked the UUIDs in grub2.cfg and they all seem correct.
> >
> > I also tried to create a chainloader, but that fails complaining
> > about an invalid checksum.
> >
> > Does anyone have an idea what is going on or how to get
> > grub2 configured correctly?  Or how to install a second Linux
> > distro in a way which works?
> >
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