Red Hat Bugzilla – Bug 115668
Kernel panic on Compaq Proliant 2500
Last modified: 2007-04-18 13:03:02 EDT
Description of problem:
When trying to install RH9 from CD, I am constantly getting a kernel
panic from operating system when trying to install
Version-Release number of selected component (if applicable):
Redhat 9.0 (Shrike)
Insert installation CD1 CDROM into machine, where it starts to boot.
We then get to the point where the system is looking for a boot
partition. However, we get a kernel panic on VFS. Have tried with
all manner of kernel arguments, but still no joy.
Steps to Reproduce:
1. Switch on server
2. Insert installation CD1 (RH9) CDROM into machine, so it boots off
3. wait until the kernel panic occurs
VFS: cannot open root device "" or 48:01
Should allow me to install operating system
OK additional information:
The machine is a compaq proliant 2500 (a bit old, but still
functional) with 4 internal SCSI drives (4.5GB a piece), 448M of RAM
(actual mem is 458752), dual processor, with a Compaq Smart-2/P Array
controller (2.14 rev B) - latest, and an array of 6 discs, making up
32GB in total.
I have tried booting with the following kernel arguments, but to no
linux nousb nodma skipddc apm=off mem=448M noapic noht nousbstorage
I have also tried putting in a boot argument of root=/dev/ida/c0d0p1
as well as root=/dev/ida/c1d0p1 (to try and access SMART array); root
= dev/sda/sda0 to access internal drives.
The machine is very capable, but probably just needs the correct boot
arguments. I know that RH 6.2 boots up without problems, but 7.0
onwards fails with same errors. Thought the problem might be to do
with cpqarray.o, but thought that this was included in the kernel for
Full error message as follows:
VFS: Cannot open root device "ida/c0d0p1" or 48:01. Please append a
correct "root=" option.
Kernel panic: VFS: Unable to mount root fs on 48:01
I get similar messages when inserting boot=/dev/sda/sda0 into the
boot argument, but get error message:
VFS: Cannot open root device "sda/sda0" or 8:01
I just worked through this myself. I'll bet a dollar this is a
duplicate of bug 36940.
instead of "mem=448M", try "mem=exactmap mem=640K@0 mem=447M@1M"
and in LILO, check to make sure you've got this:
append=" mem=exactmap mem=640K@0 mem=447M@1M"
(don't ask me how you do it in GRUB.)
Thanks - that worked a treat. Blimey, nothing like a challenge with
these Compaq boxes. I'm now order more HD space, so I'll well
chuffed. Thanks for that.
*** This bug has been marked as a duplicate of 36940 ***
Changed to 'CLOSED' state since 'RESOLVED' has been deprecated.