Dual boot problem, win xp won't boot.

[sweetrain]

Hi, I just installed F8 on my desktop with grub to enable dual boot. But now winxp wont boot. I have a 80G PATA HDD with F8 on it. A 160G SATA HDD with win xp on it.

[root@localhost grub]# df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
                      73514160   3497668  66221960   6% /
/dev/sda1               194442     18772    165631  11% /boot
tmpfs                   517476        12    517464   1% /dev/shm
/dev/sdb5            108880504  76129756  32750748  70% /media/disk
/dev/sdb1             51199120  22234784  28964336  44% /media/disk-1

The grub.conf is:

[root@localhost grub]# cat /boot/grub/grub.conf
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE:  You have a /boot partition.  This means that
#          all kernel and initrd paths are relative to /boot/, eg.
#          root (hd0,0)
#          kernel /vmlinuz-version ro root=/dev/VolGroup00/LogVol00
#          initrd /initrd-version.img
#boot=/dev/sda
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.23.1-49.fc8)
        root (hd0,0)
        kernel /vmlinuz-2.6.23.1-49.fc8 ro root=/dev/VolGroup00/LogVol00 rhgb quiet
        initrd /initrd-2.6.23.1-49.fc8.img
title Fedora (2.6.23.1-42.fc8)
        root (hd0,0)
        kernel /vmlinuz-2.6.23.1-42.fc8 ro root=/dev/VolGroup00/LogVol00 rhgb quiet
        initrd /initrd-2.6.23.1-42.fc8.img
title Other
        rootnoverify (hd1,0)
        chainloader +1

Can some one show me why winxp wont' boot? Thanks!

[stoat]

Hello sweetrain,

Yes. It's a very common situation. Go here and you will figure out what to do. Otherwise, return and we can talk more.

[sweetrain]

Thanks, got it fixed. BTW what does it mean by adding:

map (hd0) (hd1)
map (hd1) (hd0)

[stoat]

Originally Posted by The GRUB Manual

13.3.23 map
— Command: map to_drive from_drive

Map the drive from_drive to the drive to_drive. This is necessary when you chain-load some operating systems, such as DOS, if such an OS resides at a non-first drive. Here is an example:

grub> map (hd0) (hd1)
grub> map (hd1) (hd0)

The example exchanges the order between the first hard disk and the second hard disk. See also DOS/Windows.

When the hardware-specific NTLoader files that are needed to start XP (ntldr, ntdetect.com, boot.ini) are not in an active partition on the first drive, XP will usually misbehave. The XP system itself can be anywhere, but those three NTLoader files cannot. For example, if you have the XP system on the second drive and the NTLoader files in a compatible partition marked active on the first drive, then XP would happily boot. You have the system and the NTLoader files all in a partition on the second drive. The map menu commands in grub.conf temporarily change the drive order to what XP is expecting.