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Linux From Scratch This Forum is for the discussion of LFS.
LFS is a project that provides you with the steps necessary to build your own custom Linux system.

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Old 09-24-2008, 04:44 AM   #1
wyylling
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Registered: Sep 2008
Posts: 8

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LFS 6.3 Kernel panic - not syncing:VFS: Unable to mount root fs on unknown-block(2,0)


VFS:Unable to mount root fs via NFS,trying floppy
VFS:Cannot open root device "sda10" or unknown-block(2,0)
Please append a correct "root=" boot option; here are the available partions:
0340 78150744 hdb driver:ide-disk


Kernel panic - not syncing:VFS: Unable to mount root fs on unknown-block(2,0)

The harddisk layout is :

/dev/sda1 * .... HPFS/NTFS
/dev/sda2 .... W95 Ext'd(LBA)
/dev/sda5 .... HPFS/NTFS
/dev/sda6 .... HPFS/NTFS
/dev/sda7 * .... Linux
/dev/sda8 .... Linux swap/Solaris
/dev/sda9 .... Linux
/dev/sda10 .... Linux
My LFS is installed in the /dev/sda10


The grub/menu.lst is:

title Gentoo Linux 2.6
root (hd0,6)
kernel /boot/kernel-genkernel root=/dev/ram0 real_root=/dev/sda9
initrd /boot/initramfs-genkernel

title LFS 6.3
root (hd0,9)
kernel /boot/lfskernel-2.6.22.5 root=/dev/sda10

in the LFS' /boot:System.map-2.6.22.5 lfskernel-2.6.22.5

Last edited by wyylling; 09-24-2008 at 04:46 AM.
 
Old 09-24-2008, 07:02 AM   #2
wyylling
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Registered: Sep 2008
Posts: 8

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nobody can help me.....
 
Old 09-24-2008, 12:14 PM   #3
jestinjoy
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Registered: May 2004
Location: India
Distribution: Ubuntu 9.04, Debian Lenny
Posts: 121

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same problem for me.............what to do?

Last edited by jestinjoy; 09-24-2008 at 12:20 PM.
 
Old 09-24-2008, 03:12 PM   #4
Pouer
LQ Newbie
 
Registered: Nov 2006
Location: Paris
Distribution: fedora core 3
Posts: 8

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Hi,

The best documentation on this has been written by kernel developper Greg Kroah-Hartman. His book "the linux kernel in a nutshell" deals with all you have to know to build a kernel by yourself. You can finf this book (free documentation) here : http://www.kroah.com/lkn/

The solution of your problem is detailled in "Chapter 7: Customizing a Kernel" but the whole book is worth reading.

Pouer
 
Old 09-24-2008, 03:15 PM   #5
FLLinux
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Registered: Jul 2004
Location: USA
Distribution: Fedora 9, LFS 6.3, Unbuntu 8.04, Slax 6.0.7
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Also looks like you might not have included the File system needed by the kernel to read the disk. I ran into this. Sometimes the config file leave out ext2 FS access. Make sure you have all the filesystems installed you need to read the hard drive.
 
  


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