un-dual boot XP & FC2 - 2 harddrives

[kate]

un-dual boot XP & FC2
How do I correct the boot procedure?

Neither will boot separately. How do I fix this?

BACKGROUND
I have 2 hardrives. hda is XP, and hdb is FC2, managed
by Grub. I want to separate them. I bought drive
trays, so when I want FC2, I put in FC2 tray. When I
want XP, I put in XP tray. RESULT: not dual boot
system.

QUESTION
how do I correct the boot procedure?

WHAT I'VE TRIED
I take out hdb (FC2) and boot hda XP only. I get:

"GRUB hard disk error"

I place FC2 as primary master and adjust jumper as
master:
"
Booting from CD ROM
<goes to next line and waits...forever>
"
So, I think that I need to re-write a mbr, but I'm out
of my depth here. Any help appreciated.

Kate

__________________________________
Do you Yahoo!?
Y! Messenger - Communicate in real time. Download now. 
http://messenger.yahoo.com

[Taylor, ForrestX]

On Tue, 2004-08-31 at 16:02, kate wrote:
> un-dual boot XP & FC2
> How do I correct the boot procedure?
>
> Neither will boot separately. How do I fix this?
>
> BACKGROUND
> I have 2 hardrives. hda is XP, and hdb is FC2, managed
> by Grub. I want to separate them. I bought drive
> trays, so when I want FC2, I put in FC2 tray. When I
> want XP, I put in XP tray. RESULT: not dual boot
> system.

Put in the XP tray, and run the Windows rescue console from the CD. 
Choose the option to restore the MBR, and you should be able to boot
from it.

Put in the FC2 tray.  Boot from CD1 (or the DVD) and run `linux
rescue`.  When it asks, mount your system and `chroot /mnt/sysimage`. 
Change all of the entries in /etc/fstab that reference /dev/hdb to
/dev/hda.  Run `grub-install /dev/hda`.  If you get no errors, reboot
and voila ;o)

Forrest

[Alexander Dalloz]

Am Mi, den 01.09.2004 schrieb kate um 1:02:
> un-dual boot XP & FC2
> How do I correct the boot procedure?
>
> Neither will boot separately. How do I fix this?
>
> BACKGROUND
> I have 2 hardrives. hda is XP, and hdb is FC2, managed
> by Grub. I want to separate them. I bought drive
> trays, so when I want FC2, I put in FC2 tray. When I
> want XP, I put in XP tray. RESULT: not dual boot
> system.
>
> QUESTION
> how do I correct the boot procedure?
>
> WHAT I'VE TRIED
> I take out hdb (FC2) and boot hda XP only. I get:
>
> "GRUB hard disk error"

I think the command is called "fixmbr" for WinXP. You should start from
the Windows[tm] CD to run it.
> I place FC2 as primary master and adjust jumper as
> master:
> "
> Booting from CD ROM
>
> <goes to next line and waits...forever>
> "
> So, I think that I need to re-write a mbr, but I'm out
> of my depth here. Any help appreciated.

Boot with FC2 CD1 into rescue mode and install grub onto the drive. Run
"chroot /mnt/sysimage" and "grub-install /dev/hda".
> Kate

Alexander

[Jeff Vian]

On Tue, 2004-08-31 at 18:25, Taylor, ForrestX wrote:
> On Tue, 2004-08-31 at 16:02, kate wrote:
> > un-dual boot XP & FC2
> > How do I correct the boot procedure?
> >
> > Neither will boot separately. How do I fix this?
> >
> > BACKGROUND
> > I have 2 hardrives. hda is XP, and hdb is FC2, managed
> > by Grub. I want to separate them. I bought drive
> > trays, so when I want FC2, I put in FC2 tray. When I
> > want XP, I put in XP tray. RESULT: not dual boot
> > system.
>
> Put in the XP tray, and run the Windows rescue console from the CD. 
> Choose the option to restore the MBR, and you should be able to boot
> from it.
>
> Put in the FC2 tray.  Boot from CD1 (or the DVD) and run `linux
> rescue`.  When it asks, mount your system and `chroot /mnt/sysimage`. 
> Change all of the entries in /etc/fstab that reference /dev/hdb to
> /dev/hda.  Run `grub-install /dev/hda`.  If you get no errors, reboot
> and voila ;o)
>
> Forrest

He also will need to modify /boot/grub/device.map  and
/boot/grub/grub.conf to point to the correct devices before he runs the
grub-install.
> From the description given device.map probably has mapping for hd0 and

hd1.  The mapping for hd0 will need to point to the fc2 drive (/dev/hda)
and remove the mapping for hd1.

Then in grub.conf change everything that points to hd1 to point to hd0
instead.

[Alexander Dalloz]

Am Mi, den 01.09.2004 schrieb Jeff Vian um 2:37:
> He also will need to modify /boot/grub/device.map  and
> /boot/grub/grub.conf to point to the correct devices before he runs the
> grub-install.
> > From the description given device.map probably has mapping for hd0 and
>
> hd1.  The mapping for hd0 will need to point to the fc2 drive (/dev/hda)
> and remove the mapping for hd1.
>
> Then in grub.conf change everything that points to hd1 to point to hd0
> instead.

Yes! Important, and I did miss that point in my answer too.

Maybe partitions named in the /etc/fstab have to be changed too. Where
partitions labels are used all is fine. Entries pointing to /dev/hdb
have to be changed. All to be done in rescue mode from Fedora CD1.

Alexander