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Old 02-11-2008, 05:40 AM   #1
Registered: Jan 2008
Location: Bremen
Distribution: Gentoo
Posts: 33

Rep: Reputation: 15
Kernel not loading - Kernel Panic in Grub - 2.6.23-gentoo-r6

Have already posted this on gentoo forums. My apologies to those who are reading both the forums.

Trying to compile gentoo-2.6.23-r6 and get this nice error:

Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
Also something about /dev/sda5 not being found.

The relevant part of my grub.conf is this:

title=Gentoo Linux Kernel 2.6
root (hd0,4)
kernel /boot/gentoo-sources root=/dev/sda5

I know the problem is related with SCSI drivers that have to be there in the kernel. The SCSI drivers that I have built in are in accordance with this post:
and are thus:

Device Drivers --->
  < > ATA/ATAPI/MFM/RLL support --->
  SCSI device support --->
     <*> SCSI disk support
     <*> SCSI generic support
  <*> Serial ATA (prod) and Parallel ATA (experimental) drivers --->
     <*> AHCI SATA support
     <*> VIA SATA support
     <*> Generic ATA support
     <*> Intel PATA MPIIX support
     <*> Intel PATA old PIIX support
     <*> SiS PATA support (Experimental)
     <*> VIA PATA support

As for the SCSI low level disk support I have tried booting with it and also without it, and nothing seems to work. However, I have no idea what options to select in SCSI low level support.
The laptop that I possess is a Dell Latitude D520 and the hard drive is a HITACHI HTS541060G9SA00 . (That is what windows device manager tells me. :P)

Addition, the same device manager also shows that I have an IDE/ATAPI controller by the name of Intel(R) 82801GBM/GHM (ICH7-M Family) Serial ATA Storage Controller - 27C4. Do I have to enable ATA support for this. As far as I know the upper configuration that I have posted seems to work, or at least it did so, on my earlier gentoo installation. What gave me the urge to reinstall gentoo - I have no idea about. However, that apart if someone could please tell me what do I need to build in the kernel, then I would be most grateful.

Old 02-11-2008, 06:40 AM   #2
Registered: Mar 2006
Location: Czech Republic
Distribution: Gentoo, Chakra
Posts: 957
Blog Entries: 14

Rep: Reputation: 135Reputation: 135

May I suggest that you use genkernel, at least to get gentoo up and running and then compile your own kernel (with the genkernel one to fall back to, of course).

Now I would need some info : is your drive SCSI, SATA or IDE? The name of the controlers would help. The best would actually be to post your lspci output here....

Old 02-11-2008, 03:33 PM   #3
Registered: Jan 2008
Location: Bremen
Distribution: Gentoo
Posts: 33

Original Poster
Rep: Reputation: 15, found the solution here. Sorry for the little info that I provided!


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