/dev/sda1 -> /boot failure

Paul Howarth paul at city-fan.org
Tue Jul 11 20:25:56 UTC 2006


On Tue, 2006-07-11 at 14:56 -0500, Mikkel L. Ellertson wrote:
> Patrick Nelson wrote:
> > FC4 yum updated
> > 
> > I have a system that has /boot as its own partition (/dev/sda1).  The
> > rest of the fs is in a lvm volume group.
> > 
> > the /dev/sda1 is having some problems which were shown by
> > 
> > - boot off of rescue cd, mount FC4 instance and chroot to it, then re
> > login as root
> > - umount /boot
> > - fsck -c /dev/sda1
> > 
> > and I want to move /boot back onto the "/" fs in the volume group, which
> > I have done by:
> > 
> > - boot off of rescue cd, mount FC4 instance and chroot to it, then re
> > login as root
> > - removed the /boot reference in fstab
> > - copied /grub dir from old /boot to the new dir
> > - because the kernel files were corrupted I added the kernels (I usually
> > keep 2 -> current and 1 version back) back with:
> > --  rpm -ivh --force --noscript kernel-2.6.17-1.2139-FC4.i686.rpm
> > --  rpm -ivh --force --noscript kernel-2.6.17-1.2141-FC4.i686.rpm
> > 
> > This appears to have put the files back into the new /boot location.  So
> > my question is what is the next step to tell the system that it needs to
> > use the new /boot directory?
> > 
> > Or any other comments?
> > 
> Does Grub know how to handle LVM volume groups? I thought part of
> the reason for having a separate /boot partition was for Grub
> access, but I could be wrong. In any case, you will have to
> re-install Grub to the MBR. Depending on the changes you have made,
> you may have to update the device map as well.

You're not wrong. AFAIK grub cannot boot from an LVM volume. It needs to
be a separate partition.

Paul.





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