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Old 09-08-2006, 02:18 AM   #1
LQ Newbie
Registered: Sep 2006
Posts: 2

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Kernel panic : VFS unable to mount root fs....

Hi All!

I compile kernel image on debian sarge.
hardware is IBM xseries 335, hardware raid1

with original kernel no problem (2.4.27)
the new compiled kernel is 2.6.16, but start give next
error message:

Kernel Panic -not syncing VFS unable to mount root fs on
VFS cannot open root device "sda2" or unknow-block(0,0)
Please append a correct "root=" boot options

The root is on sda2
fs type in kernel:

<*> Second extended fs support[*] Ext2 extended attributes[*] Ext2 POSIX Access Control Lists [*] Ext2 Security Labels [*] Ext2 execute in place support
<*> Ext3 journalling file system support [*] Ext3 extended attributes [*] Ext3 POSIX Access Control Lists [*] Ext3 Security Labels
[ ] JBD (ext3) debugging support
<*> Reiserfs support
[ ] Enable reiserfs debug mode
[ ] Stats in /proc/fs/reiserfs [*] ReiserFS extended attributes [*] ReiserFS POSIX Access Control Lists
[ ] ReiserFS Security Labels
< > JFS filesystem support
<*> XFS filesystem support [*] XFS Quota support [ ] XFS Security Label support
<*> ROM file system support
[ ] Inotify file change notification support [*] Quota support
< > Old quota format support
< > Quota format v2 support
<*> Kernel automounter support
<*> Kernel automounter version 4 support (also supports v3)

I try with raid support and without raid support, but not work

Any idea?

ps: sorry my poor english
Old 09-08-2006, 03:31 AM   #2
Registered: Oct 2004
Distribution: slamd64-current, slackware-current, clfs 6.1, arch-current, ubuntu dapper
Posts: 144

Rep: Reputation: 15
yeah dont do it that way :/ debians own kernel is much better and tweaked to work :/

take a look here why -->

i suggest try to install the 2.6 kernel with the package system.

if ya realy want to compile it yourself to tweak it further i suggest you go with a slackware distro or maybe arch or something. they are more open to a self compiled kernel.

and the real answer:
you gotta look into your device support and find the sata support and add it to the kernel since you use a sata drive (sda - right? correct me if im wrong) (and raid 1 support must be on ofcourse^^) ill post back if im home with a more detailed explenation if ya need it.

Last edited by Youri; 09-08-2006 at 03:36 AM.
Old 09-08-2006, 04:24 AM   #3
LQ Newbie
Registered: Sep 2006
Posts: 2

Original Poster
Rep: Reputation: 0
Hi Youri!

I have two hot-swap scsi hdd, and the scsi driver
compiled into the kernel,
the raid 1 is hardware raid



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