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Old 02-28-2005, 09:27 AM   #1
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GRUB: NTLDR not found. Or is it?

Hi all.

I used to use a triple boot scheme with MS-DOS on /dev/hda1, WinNT on /dev/hda2 and SuSE's root (/) on /dev/hdb5. GRUB in the MBR started WinNT just fine (set up by SuSE's install), NTLDR started DOS, WinNT or jumped back to GRUB.

Then I had trouble with DOS starting, so in the end I booted from floppy and issued "sys a: c:" thus effectively resetting DOS -- which I can start now again (from GRUB) instead of WinNT. I added a new stanza to menu.lst for WinNT.

I heave NTLDR, and boot.ini on /dev/hda1, /dev/hdb1 and /dev/hdb2 (though not on /dev/hda2) and tried each one from menu.lst with an extra stanza. I could coax neither of the three partitions to start with an entry in GRUB, always got "NTLDR not found. Restart with any key."

When I do that very briefly the message "GRUB stage 2" blinks and then I'm back in the boot menu.

So: Who or what writes the error-message "NTLDR not found"? If GRUB does, how does it know I even want NTLDR started but the refuses to do just that?

How do I get NTLDR started again (from within GRUB)?

Last edited by JZL240I-U; 02-28-2005 at 09:31 AM.
Old 02-28-2005, 02:37 PM   #2
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with xp you need to boot from the cd, use the recovery console, and use fixmbr, then you probably need to add the dos partition in boot.ini and then reinstall grub. It shouldn't be different in NT, but I don't know. If the CD is not bootable, are there NT startup disks?
windows95/98 startup disks have a "fdisk /mbr" command doing the same thing but i don't know if this works for NT. I'm trible booting linux/XP/DOS

Last edited by perfect_circle; 02-28-2005 at 02:41 PM.
Old 03-07-2005, 04:33 AM   #3
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In the end I let loose the NT-repair console. It even did something to the MBR but somehow GRUB elegantly evaded it (probably with a friendly kick in its butt). I could boot right away with GRUB, also GRUB calling the NT-loader like before, so everything is back to normal.

Still, I would like to know a way to start MS-DOS on /dev/hda1 and WinNT on /dev/hdb2 directly from GRUB, any GRUB-guru looking in?

<edit> Found out myself . The trick is to use hidden FAT partitions for starting µsoft OSses in conjunction with GRUB. Ah, well, next time ... Oh, the link go here for an example. .

Last edited by JZL240I-U; 03-09-2005 at 05:13 AM.


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