I think I messed up my MBR...

sandy_obrien · 05-12-2004, 03:11 AM

Alright, so I'm running GRUB to select between my two OS's that are on two seperate physical drives, (Red Hat 9 + Windows XP). Red Hat boots like a charm, not a problem, but when I select DOS. I get this screen...

Quote:

Booting 'DOS'
rootnoverify (hd0,0)

chain loader +1

Then proceeds to do nothing....

... And that doesn't really mean anything to me. I know I have my partitions set up correctly. Is there anything I can do to fix this problem...

I would have done some fiddling around myself at the GRUB menu, but I don't want to permanently damage anything.

THANK-YOU!

born4linux · 05-12-2004, 04:56 AM

use this:

title Windows XP
root (hd0,0)
makeactive
chainloader +1

not sure if you have a typo err in your post above and in your grub.conf.
if you still have problems, post the output of fdisk -l and your grub.conf entries (without the comments).

sandy_obrien · 05-12-2004, 03:17 PM

Quote:

Originally posted by born4linux
use this:

title Windows XP
root (hd0,0)
makeactive
chainloader +1

not sure if you have a typo err in your post above and in your grub.conf.
if you still have problems, post the output of fdisk -l and your grub.conf entries (without the comments).

Sure, I'll post them. Can you tell me how? I'm pretty new at this.

sandy_obrien · 05-12-2004, 07:03 PM

BUMP

I sort of need to have this fixed tonight, thanks!

explorer · 05-12-2004, 07:55 PM

as a last resort - if you can't get it fixed and absolutely have to get into m$ tonight, boot to your m$ xp cd-rom and use the utilities option to recover the mbr. I say as a last resort only because recovery this way will not let you boot back to linux unless you have a recovery floppy disk made already.

sandy_obrien · 05-12-2004, 08:46 PM

Yeah, I'm almost ready to do that if someone doesn't help me out with my MBR.

Thanks.

sandy_obrien · 05-14-2004, 02:12 AM

I still need help with this...

bump

sandy_obrien · 05-14-2004, 07:04 AM

I tried editing my grub.conf at my start up like you suggested but the 'title Windows XP' line was unrecognized so I removed it, and this is what happend:

Quote:

Booting command-list

root (hd0,0)
Filesystem type unknown, partition type 0x7
makeactive
chainloader +1

And Here is the output of fdisk:

Quote:

Disk /dev/hda: 120.0 GB, 120034123776 bytes
255 heads, 63 sectors/track, 14593 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/hda1 * 1 14592 117210208+ 7 HPFS/NTFS

Disk /dev/hdb: 33.8 GB, 33820286976 bytes
240 heads, 63 sectors/track, 4368 cylinders
Units = cylinders of 15120 * 512 = 7741440 bytes

Device Boot Start End Blocks Id System
/dev/hdb1 * 1 4368 33022048+ 83 Linux

Anymore help would be great,

Thanks!

explorer · 05-14-2004, 08:04 AM

Sandy - I installed RH9 and RHE 2.1 before and had the same problem booting into windows with grub and I never did get it to work. Would it be possible for you to re-install RH9 and choose lilo as the boot loader instead of grub ? or, I think RH has a boot config tool, redhat-boot-config or something like that - maybe you can fix it or change it to lilo there.

sandy_obrien · 05-16-2004, 04:14 PM

^^ I could possibly try that

I'm stilling looking to fix my grub.conf right now, i'll use what you said (explorer) as a sort of latst resort.

bump.

orange400 · 05-16-2004, 11:26 PM

Is hd0,0 correct? I would suspect it being something like hda,1. But that's just thinking in linux terminology, I could be totally off.

JZL240I-U · 05-17-2004, 01:55 AM

hd(0,0) is synonymous with /dev/hda1. Still, you might want to check the layout of your system to make sure you hit the right partition...

Good luck.

kinasz · 05-17-2004, 02:26 AM

I had the same problem with grub and RH9. You can install lilo by running "kcontrol" then "System Administration" then "boot manager". It has an auto detect that should work.