configuring grub

fosh1zzl3 · 05-12-2004, 02:18 PM

i installed phlak to one of my hard drives but it doenst show up in grub. how do i edit grub for phlak to showup? im using red hat 9. is there a program or a file i have to edit?

marghorp · 05-12-2004, 02:22 PM

/boot/grub/grub.conf

You should copy the lines you have and apply changes to them. Before doing this do a backup of the grub.conf file!!!

fosh1zzl3 · 05-12-2004, 05:53 PM

this is the line i have for phlak, i boot up and it doesnt work.

title PHLAK
root (hda1,0)
kernel /boot/vmlinuz-2.4.21-xfs ro root=LABEL=/

and this is the contents of my boot folder on the phlak drive

config-2.4.21
vmlinuz(shortcut to next item)
vmlinuz-2.4.21-xfs

so what do i need to put in the line in order to boot into phlak.

marghorp · 05-12-2004, 06:00 PM

What happende to initrd? In RH9 you must have a line saying initrd ..... in your grub.

Just try to make the PHLAK lines identical to REDHAT 9's and make the proper changes. That should do the trick.The one you have now is good. Just add the initrd line. I bet it all stops at Kernel panic: pass init to kernel (or something with init in it

)

mbegovic · 05-12-2004, 06:19 PM

I don't think initrd is mandatory. It depends on how the kernel was compiled. If it boots as is, than there is no problem.

fosh1zzl3 · 05-12-2004, 06:29 PM

im getting the error "error parsing line (hda1,0)" or soemthign similar to that. anyone know?

mbegovic · 05-12-2004, 06:33 PM

(hda1,0) looks wrong. It should probably be (hd1,0).

fosh1zzl3 · 05-12-2004, 06:35 PM

thats what the red hat line uses. should i try it anyway?

mbegovic · 05-12-2004, 06:40 PM

Maybe it's different, who knows. Doesn't hurt to try, though. In grub hd0,1 means hda1. That's the naming scheme.

fosh1zzl3 · 05-12-2004, 07:01 PM

this is my line for phlak now

title PHLAK
root (hd0,0)
kernel /boot/vmlinuz-2.4.21-xfs ro root=LABEL=/

it starts to boot and detects devices then gives me this

VFS: Cannot open root device "Label=/" or 00:00
Please append a correct "root=" boot option
Kernel panic: VFS: Unable to mount root fs on 00:00

mbegovic · 05-12-2004, 07:47 PM

You should specify your root partition there. I'm not sure what the 'LABEL' is for.

fosh1zzl3 · 05-12-2004, 07:50 PM

what is the root partition. i have 2 hard drives, hd0 and hd1, do i put one of them there. hd1 has red hat 9 on it and hd0 is phlack

mbegovic · 05-12-2004, 07:53 PM

According to the rest of your config the root partition for phlak is (hd0,0). However, in the kernel parameters you should use the Linux naming, so (hd0,0) would be hda1. Try:

Code:

kernel /boot/vmlinuz-2.4.21-xfs ro root=/dev/hda1

fosh1zzl3 · 05-12-2004, 08:43 PM

thanks alot. it works now.

mbegovic · 05-12-2004, 10:10 PM

You're welcome, buddy.