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Grub problem with 2 drives and multiboot - SOLVED!
My system is Abit NF7-S ver2 with 2 IDE controllers and 2 SATA controllers. I'm running 2.6.0 kernel Fedora core 1 with no problems except a working multiboot.
This is my drive setup:
- 1st IDE disk has Fedora linux and Grub in MBR. /dev/hda in linux.
- 2nd IDE is CD-RW. /dev/hdc in linux.
- 1st SATA disk has Windows XP. /dev/hde in linux
I installed Grub to MBR in /dev/hda which is the IDE drive as I want to boot IDE and leave sata disks MBR intact so I can boot XP solo if I need to. So, in BIOS I have boot from IDE-0 first, which is the Linux drive /dev/hda (hd0 in Grub).
I can't get Grub to load WinXP when booting with the IDE disk. So, in the boot hd0 is the IDE disk with Grub and hd1 is the SATA disk with XP.
I have tried:
map (hd0) (hd1)
map (hd1) (hd0)
makeactive - tried with and without
chainloader +1 - also tried chainloader (hd0,0)+1
boot - tried with and without
Changing order and leaving lines off for various combinations but no success so far. It always stops on a text screen with these Grub commands in it and nothing happens. Also tried without the mapping commands. Always the same result.
Only way to switch booting systems for me is to switch the booting drive in BIOS: IDE for linux and SATA for WinXP.
Any tips? Is the only choide to install Grub to WinXP driver MBR and try it that way? Or make a real /boot partition and install Fedora again?
Last edited by Defaultman; 01-11-2004 at 03:25 PM.
In the boot section for Windows is needs to say rootnoverify (hd1,0) so it points to the SATA drive. Even though you used map to do a virtual swap, grub still sees the drive as hd1, only the OS sees it as hd0.
Dont use boot or make active commands, those are implied.
How much was your SATA drive, they any good as far as speed is concerned?
Last edited by Zero-0-Effect; 01-08-2004 at 11:11 AM.
Thanks I'm gonna try out that trick now in case I missed it before.
SATA drive is certainly faster than my old ATA100 IDE drive but nothing groundshaking. The real benefit is the much thinner cable of SATA standard The prices are about the same nowadays so at least I will buy SATA drives from now on.
I repartitioned the IDE disk (hd0) to following partitions:
hda1 /boot 100Mb
hda3 / 15Gb
hda5 /swap 1Gb
and the rest is a FAT32 partition for sharing files with XP.
SATA drive is all WinXP. it is hd1 in Grub and /dev/hde in linux.
I installed Grub to first sector of boot partition. That means hda1 a.k.a /boot.
- At first boot I got GRUB error 15 which ment file not found. Then I booted with Fedora CD and reinstalled grub with grub-install --root=/dev/hda1.
- Next boot I was greeted with a grub prompt. No menu yet I have one in /boot/grub/grub.conf.
Then I noticed grub had done this kind of directory structure for itself:
/boot/boot/grub/. So it had made a /boot dir to /boot partition?! Weird!
- Then I copied the grub.conf and menu.lst to this new directory and at next boot I had the menu and I could boot Linux.
BUT I still can't boot the damn WinXP drive from Grub. I just get the Grub commands on screen and then nothing happens.
Do I really need to install Grub into MBR of the WinXP SATA drive and then boot from it? Could I get the multiboot working easier this way? I'm getting tired of Grub to be honest... It doesn't handle IDE and SATA drives mix very welll it seems. Or does anyone have a succesfull IDE/SATA drive multiboot setup?
what happens if you invoke these lines into the grub console directly?(i think u press 'c' inside grub menu to get in the console, cant remember). Note that you need to enter 'boot' in the end, inside the console.
oh and for the grub /boot/boot problem, thats because you probably had /boot in your kernel path, just change it to /, when u have a separate /boot partition the files are seen by grub as in /, its only when u boot into your system that the partiton gets mounted on /boot, which has little relevance to grub itself.
For disk structure: I have 2 drives, I didn't list extended partitions, only mountable ones. SATA drive is seen as /dev/hde in linux.
I hope this clears it up a bit! I will post the exact /etc/fstab once I'm home.
hda - linux harddrive
hdb - empty
hdc - cdrom
hdd - empty
hde - SATA with windows
to boot windows is should just be
title Windows XP
If you have another harddrive in either hdb or hdd...(3rd drive) the SATA drive will not be hd1. Neeed to know ALL devices and where they are connected. Is Windows on the first partition of the SATA drive?
This case is solved! It was not a linux issue, not a Grub issue but a motherboard bios issue:
My motherboard is Abit NF7-S ver2 and I was using this (modified) BIOS with a newer sata bios v4.2.32. I got this tip from someone who has a working multiboot with a similar setup but used a bios with older sata bios so I though I'd give it a try.
So I flashed to older one with v126.96.36.199 sata bios (still a modded one so I don't think the mod itself is the fault, only the sata bios) and it begun to work with first try!
Lesson learned: don't use Abit NF7-S board with sata bios 188.8.131.52!!
Thanks all for help and suggestions, I learned a lot during the process.
I too have an NF7-S and have XP on my SATA HD and have just installed Fedora Core 3 to my IDE HD. I can boot to Fedora fine, but not to XP...
I have tried messing around with the GRUB config file, but with no success, and I tried doing fixmbr on my XP install form the Recovery Console, but that not only didn't fix XP, it messed up Fedora, so I had to re-install it...
I don't know whether my NF7-S is v1 or v2, how do I find out? Where can I get the appropriate BIOS upgrade to fix this? And what did you end up with in your GRUB config once you got it to work?
Hope you can help me, I have stuff on my XP install I need to get to...
Distribution: openSuSE 13.2 / 12.3_64-KDE, Ubuntu 14.04, Mint 17
Just in case it is not a BIOS / mainboard problem: Try an other distribution (SuSE, Knoppix...). To my experience SuSE handles different OSes very well (and all automatically, without you having to interfere more than to click "Okay")...