Red Hat Bugzilla – Bug 137523
Installer boot panics on CRC error in ramdisc decode
Last modified: 2007-11-30 17:10:53 EST
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.3)
Description of problem:
Installing FC3test3 on a brand-new dual-Opteron machine from CD.
After using any of the boot options, boot proceeds and panics after
trying to decode the ramdisk. Here is the relevant section of the
boot process (hand-retyped):
RAMDISK: Compressed image found at block 0
VFS: Cannot open root device "<NULL>" or unknown-block (3,2)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: unable to mount root fs on
I've checked the md5sums and they are 100% correct wrt the downloaded
images. I've also tried burning another CD (in case it was a media
error) with exactly the same results. All options, such as 'linux
rescue' and 'linux text', do this, as it seems to be in the initial
Also worth noting: the Fedora logo did not show in the initial boot
screen. This maybe another bug, but it may be a symptom related to
this one too.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Boot from CD
2. Use any boot option
Actual Results: Boot panics at ramdisk unpack as above.
Expected Results: Boot continues successfully.
Memory test shows no errors, machine uses ECC RAM so very unlikely
this is a RAM error.
I'd look for BIOS updates for your box. This smells a lot like a BIOS
with buggy handling of the CD READ stuff.
Updated to latest BIOS (2.03), still has problem. Fedora Core 2 i386
boots up fine on same machine (but I can't find the right drivers for
the Silicon Image 3114 SATA interface, so I can't install FC2 and
upgrade from there).
Also tried 'linux acpi=off', still has problem.
Also tried Fedora Core 3 test 2, still has (same) problem.
I knew it would be something simple.
It looks like a problem with the CD burner we're using here. It
managed to burn the images badly in some way. I burnt the same ISO
file to a CD on my home machine, brought it in to work and it worked
I'm sorry to have raised this issue and will now bury myself in soft
peat out of shame.