Volker Englisch wrote:
I have a problem I'm trying to solve and I'm hoping someone here might
know a solution.
I am running FC4 (with AMD64) and was able to boot the machine without
problems until last Friday when I had to change my motherboard.
Since then it appears that I'm unable to boot because the system can
not find my LVM. I see this error message after grub selected the OS:
Red Hat nash version 4.2.15 starting
Reading all physical volumes. This may take a while ...
No volume groups found
Unable to find volume group "VolGroup00"
and as a result a kernel panic.
I can start the machine by using the installation disk and boot with
'linux rescue' and then I can see my volume and access the data.
I have two SATA hard drives with a /boot partition and the volume
group on the first one and the second HDD has just regular partitions:
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol04 15G 7.2G 6.4G 54% /var
/dev/mapper/VolGroup00-LogVol03 34G 12G 20G 37% /backup
/dev/mapper/VolGroup00-LogVol00 24G 7.9G 15G 35% /
/dev/sda1 99M 29M 65M 31% /boot
/dev/sdb3 138G 18G 113G 14% /free
/dev/mapper/VolGroup00-LogVol02 29G 3.4G 24G 13% /home
/dev/sdb2 46G 1.2G 43G 3% /home/public
/dev/sdb1 46G 706M 43G 2% /home/mail
Here is the content of my grub.conf
#boot=/dev/sda
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
password --md5 $1$n/QZG.cU$Cp6m9OIRXtaldLKLpJUE61
title Fedora Core (2.6.17-1.2142_FC4)
root (hd0,0)
kernel /vmlinuz-2.6.17-1.2142_FC4 ro
root=/dev/VolGroup00/LogVol00 rhgb quiet
initrd /initrd-2.6.17-1.2142_FC4.img
title Fedora Core (2.6.17-1.2141_FC4)
root (hd0,0)
kernel /vmlinuz-2.6.17-1.2141_FC4 ro
root=/dev/VolGroup00/LogVol00 rhgb quiet
initrd /initrd-2.6.17-1.2141_FC4.img
I already ran
$ grub-install /dev/sda
but that didn't change anything.
I'm not even sure if this problem is related to grub or to another
process later in the boot sequence.
Thanks for your help.
I'd suspect that the new MB has a different SATA controller and that's
not built into the initrd that's on the machine.
Boot the machine with the rescue CD, and get the postinstall and
preuninstall scripts using " rpm -q kernel --scripts".
Rerun them (preuninstall first) and you'll have a shiny new initrd which
should do the trick.
Jeff Voskamp
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