grub.conf

cmandan · 09-26-2003, 05:57 PM

hi all:

Where do you specify the location of grub.conf for grub to look up during the boot up??

I am getting GRUB printed on the top left corner of the blank screen and the boot-up halts...It looks like grub is not able to detect my grub.conf file in the /boot/grub directory.

Thanks,
Chirag

cmandan · 09-26-2003, 05:58 PM

hi all:

Where do you specify the location of grub.conf for grub to look up during the boot up??

I am getting GRUB printed on the top left corner of the blank screen and the boot-up halts...It looks like grub is not able to detect my grub.conf file in the /boot/grub directory.

Thanks,
Chirag

kev82 · 09-26-2003, 06:35 PM

even if grub cant find its conf file it loads upto a prompt, if all it does is say GRUB that means it cant find its second stage loader, i suggest you reinstall it in the mbr, the command in the grub console is either setup or install, i forget

this aint got much to do with networking

fancypiper · 09-26-2003, 06:46 PM

What is your partitioning scheme and configs for /etc/fstab and /boot/grub/grub.conf?

Installing a bootloader
Multiboot with GRUB Mini-HOWTO
Linux+Win9x+Grub HOWTO

Code:

 root@uilleann # fdisk -l

Disk /dev/hdc: 255 heads, 63 sectors, 4867 cylinders
Units = cylinders of 16065 * 512 bytes

   Device Boot    Start       End    Blocks   Id  System
/dev/hdc1   *         1      4867  39094146   83  Linux

Disk /dev/hda: 255 heads, 63 sectors, 4865 cylinders
Units = cylinders of 16065 * 512 bytes

   Device Boot    Start       End    Blocks   Id  System
/dev/hda1   *         1      1215   9755991    c  Win95 FAT32 (LBA)
/dev/hda2          1215      2429   9751455    7  HPFS/NTFS
/dev/hda3          2429      2441     99855   83  Linux
/dev/hda4          2442      4865  19470780    5  Extended
/dev/hda5          2442      2504    506016   82  Linux swap
/dev/hda6          2505      2931   3429846   83  Linux
/dev/hda7          2932      3358   3429846   83  Linux
/dev/hda8          3359      3785   3429846   83  Linux
/dev/hda9          3786      4212   3429846   83  Linux
/dev/hda10         4213      4865   5245191   83  Linux

Disk /dev/hdb: 255 heads, 63 sectors, 9729 cylinders
Units = cylinders of 16065 * 512 bytes

   Device Boot    Start       End    Blocks   Id  System
/dev/hdb1   *         1      1244   9986917+  83  Linux
/dev/hdb2          1244      2518  10238886   83  Linux
/dev/hdb3          2519      3793  10241437+  83  Linux
/dev/hdb4          3794      9729  47680920   83  Linux

Code:

# Duron 950 Red Hat 7.3 /etc/fstab file
/dev/hda7	/               reiserfs	defaults	1 1
/dev/hda3	/boot           ext3		defaults	1 2
none            /dev/pts        devpts		gid=5,mode=620  0 0
/dev/hda9	/home           reiserfs	defaults	1 2
/dev/hdc1	/mnt/storage    vfat		defaults	0 0
#/dev/hdc1	/mnt/storage    ext3		defaults	0 0
/dev/hda1	/mnt/win98	vfat		defaults	0 0
/dev/hda2	/mnt/win2k	ntfs		defaults	0 0
none            /proc           proc		defaults	0 0
none            /dev/shm        tmpfs		defaults	0 0
#/dev/hdb1	/pub            ext3		defaults	1 2
/dev/hdb4	/pub            ext3		defaults	1 2
/dev/hda10	/snd            reiserfs	defaults	1 2
#/dev/hda6	/mnt/gentoo     reiserfs	defaults	1 2
#/dev/hda8	/mnt/mandrake   ext3		defaults	1 2
/dev/hda5	swap            swap		defaults	0 0
/dev/cdrom	/mnt/cdrom	iso9660		noauto,owner,ro 0 0
/dev/fd0        /mnt/floppy     auto		noauto,owner    0 0

Code:

# Duron 950 Red Hat 7.3 /boot/grub/grub.conf file
default=0
timeout=10
splashimage=(hd0,2)/boot/grub/splash.xpm.gz
title Red Hat Linux 7.3
    root (hd0,2)
    kernel /vmlinuz-2.4.20-18.7 ro root=/dev/hda7 hdd=ide-scsi mem=nopentium
    initrd /initrd-2.4.20-18.7.img
title Mandrake 9.0 Linux
    kernel (hd0,7)/boot/vmlinuz root=/dev/hda8 quiet devfs=mount hdd=ide-scsi vga=788 mem=nopentium
    initrd (hd0,7)/boot/initrd.img
title Gentoo Linux
    root (hd0,2)
    kernel (hd0,2)/boot/bzImage root=/dev/hda6 hdd=ide-scsi mem=nopentium
title Windows
    rootnoverify (hd0,0)
    chainloader +1

cmandan · 09-26-2003, 07:44 PM

ok..my partitions are as follows...

/dev/hda1 is mounted on boot, /dev/hda2 is mounted on / and /dev/hda3 is swap partition

grub.conf

default=0
timeout=10
splashimage=(hd0,0)/grub/splash.xpm.gz
title Red Hat Linux
root (hd0,0)
kernel /vmlinuz-2.4.20-8 ro root=Label=/
initrd /initrd-2.4.20-8.img

ok, when i run grub command, it gives me some binary data instead of a grub prompt..

also, grub-install '(hd0)' says that there is no Bios associated with /dev/hda1

Pls help,
thanks,
chris

cmandan · 09-26-2003, 07:48 PM

hi kev,

thanks for your response. when i type in /sbin/grub on the prompt that i have got using the rescue disk, i get some binary characters. How do i get the grub console? It straight brings me to a blank screen when it boots that has GRUB on the top left corner...nothing else. i would really appreciate your help here

thanks,

C

cmandan · 09-26-2003, 07:49 PM

also,

grub-install '(hd0)' gives me
/dev/hda1 does not have any corresponding bios drive

bigrigdriver · 09-26-2003, 09:58 PM

I would suggest this possibility. Grub wants to know where the rest of the boot/grub files are located. They are located relative to the root partation (in your schema that's /dev/hda2). Your grub.conf says it's at (hd0,0) which is incorrect; that's the /boot directory. So, try changing (hd0,0) to (hd0,1) to tell grub where the root partition is (/dev/hda2). Grub should then be able to find /boot/grub relative to the root partition.

Backslash · 09-27-2003, 03:13 AM

Hi,

Did you try something like # grub --install-partition=/dev/hda1 ?

Hope this helps

--Backslash

kev82 · 09-27-2003, 07:24 AM

by cmandan
when i type in /sbin/grub on the prompt that i have got using the rescue disk, i get some binary characters.

umm, i dont know, ive never got that before. are you using redhat? because i remember using it a while ago and its grub was a bit dodgy on my hardware so i compiled my own. all i can think of is for you to download the latest grub stable, and compile it yourself.

david_ross · 09-27-2003, 07:32 AM

This isn't a networking question so it is being moved to Linux->General

arunshivanandan · 09-27-2003, 07:35 AM

Quote:

Originally posted by cmandan
also,

grub-install '(hd0)' gives me
/dev/hda1 does not have any corresponding bios drive

try 'grub-install /dev/hda --recheck'

cmandan · 09-27-2003, 11:51 PM

i get the same binary characters with every option of grub-install mentioned above...with --recheck it gives me /dev/hda does not have coreesponding boot drive

i also tried hda1, hda2, (hd0,0), (hd0), (hd0,2) and some other options but with the same result...

pls help

kev82 · 09-28-2003, 03:34 AM

all i can suggest is what ive already said http://www.linuxquestions.org/questi...399#post503399

megaspaz · 09-28-2003, 04:34 AM

can you boot into linux with your rescue disks? if you can run the "grub-install /dev/hda" command from a shell terminal.

this should work, as i had my dad run this command from his terminal when grub didn't work right and he had to use a boot disk to get into linux.

also a question pertaining to this subject... is the reason why cmanadan is getting wierd characters because of trying to install from the boot/grub prompt? i mean at that stage is /dev/hda even mounted?