Grub can not see the kernel on the boot - file not found

billw-hou · n00b Joined: 24 Sep 2004 Posts: 10

I've followed the instruction for stage three, several times, to no avail.. As far as I can tell, there appears to be some sort of error with either grub, itself, or the configuration instructions for grub. The problem is how partion numbering is configured.. For example, on my system, my install target is /dev/hdg. (I've done a standard install. 3 partitions created per the instrustions...root, swap and boot) however grub "thinks" my ROOT partition is my BOOT partition. (grub generates a error 15 file not found, when pointed to where the root actually is (hd0,2)) however it DOES see the kernel if I edit the command line, on the fly, to point to (hd0,0). Which SHOULDN"T work cause this is my BOOT not my ROOT... but it does.

Which begs the question... is grub broken ?

Raoul_Duke · Posted: Fri Sep 24, 2004 12:37 pm Post subject:

The kernel image SHOULD be on your boot partition. You 'need' it to boot :wink:

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billw-hou · n00b Joined: 24 Sep 2004 Posts: 10

That makes sense...I'm still confused as to why the documents would say to point Grub to ROOT instead of BOOT. Here's the section that's confusing me:

*****************************
Code Listing 4: grub.conf for genkernel users

default 0
timeout 30
splashimage=(hd0,0)/grub/splash.xpm.gz

title=Gentoo Linux 2.4.26-r6
root (hd0,0) <-----------This line is the problem , my root is partition 3, not 0
kernel /kernel-2.4.26-gentoo-r6 root=/dev/ram0 init=/linuxrc ramdisk=8192 real_root=/dev/hda3
initrd /initrd-2.4.26-gentoo-r6

# Only in case you want to dual-boot
title=Windows XP
root (hd0,5)
makeactive
chainloader +1

Note: If you use a different partitioning scheme and/or kernel image, adjust accordingly. However, make sure that anything that follows a GRUB-device (such as (hd0,0)) is relative to the mountpoint, not the root. In other words, (hd0,0)/grub/splash.xpm.gz is in reality /boot/grub/splash.xpm.gz since (hd0,0) is /boot.
***********************8

billw-hou · n00b Joined: 24 Sep 2004 Posts: 10

Correction - for Grub it would be partition 2 , not 3...

LordBug · Tux's lil' helper Joined: 25 Jan 2003 Posts: 88

billw-hou · n00b Joined: 24 Sep 2004 Posts: 10

I think i've got it...you need to point the ROOT entry to the BOOT partition, NOT THE ROOT. I didn't realize that the root and boot locations needed to be swapped, if you follow the recommended partioning scheme.

I guess I was just too busy pointing everything to it's proper location and making sure I got grub's partioning scheme right...this one flew right past me, but is damn obvious when you actually THINK about it...

Thanks!

chunderbunny · Posted: Fri Sep 24, 2004 4:50 pm Post subject:

I think it's a little ambiguity in the grub.conf. When it says root (hd0,0) it's not referring to your Linux root (/) partition, it's looking for your grub root partition (which just happens to be mounted at /boot in Linux.)