[grub #2] Win2K unable to be booted by installed GRUB

[bug-grub]

Reporter: address@hidden
Summary: Win2K unable to be booted by installed GRUB
Version: 0.91
Type: software bug

Message:
I have got a disk partitioned as follows:
Disk /dev/hda: 255 heads, 63 sectors, 9729 cylinders
Units = cylinders of 16065 * 512 bytes

   Device Boot    Start       End    Blocks   Id  System
/dev/hda1   *         1      2550  20482843+   7  HPFS/NTFS
/dev/hda2          2551      2556     48195   83  Linux
/dev/hda3          2557      7653  40941652+  83  Linux
/dev/hda4          7654      9729  16675470    f  Win95 Ext'd (LBA)
/dev/hda5          7654      7702    393561   83  Linux
/dev/hda6          7703      9566  14972548+  83  Linux
/dev/hda7          9567      9696   1044193+  82  Linux swap
/dev/hda8          9697      9729    265041   83  Linux

The first 20GB partition contains a Win2K installation, and the rest is a 
default Redhat 7.3 installation, with the mount list as follows:
/dev/hda5 on / type ext3 (rw)
none on /proc type proc (rw)
usbdevfs on /proc/bus/usb type usbdevfs (rw)
/dev/hda2 on /boot type ext3 (rw)
none on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/hda6 on /home type ext3 (rw)
none on /dev/shm type tmpfs (rw)
/dev/hda3 on /usr type ext3 (rw)
/dev/hda8 on /var type ext3 (rw)

While building this box I first installed Windows, and then I installed Redhat. 
 During the redhat installation I directed the installer to set grub up on the 
boot sector, not the MBR.  Thus, the MBR still contained Windows' default boot 
loader.

After the installation I verified that Windows would still boot from the MBR.  
I also verified that it would boot from a copy of GRUB on a floppy disk, with 
the following commands:
root (hd0,0)
chainloader +1
boot

I then verified that Linux would boot from a floppy disk containing grub - I 
checked it by chain-loading the copy of GRUB on the boot partition from the 
instance on the floppy.  All worked fine.

I then installed GRUB on to the MBR.  Now, Linux will boot perfectly both 
directly from the copy of GRUB on the MBR and by chain-loading the copy of GRUB 
on the boot sector.  Windows, however, hangs while displaying the initial, 
text-mode progress bar during the hardware detection phase of its boot.  
Windows is still bootable by using the copy of GRUB on the floppy disk, but it 
will not boot from either the copy of GRUB on the MBR or on the Linux boot 
sector, using exactly the same commands.

My GRUB config file is:
# 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 (hd0,1)
#          kernel /vmlinuz-version ro root=/dev/hda5
#          initrd /initrd-version.img
#boot=/dev/hda2
default=0
timeout=10
splashimage=(hd0,1)/grub/splash.xpm.gz
title Red Hat Linux (2.4.18-3)
        root (hd0,1)
        kernel /vmlinuz-2.4.18-3 ro root=/dev/hda5
        initrd /initrd-2.4.18-3.img

And my device.map file is:
# this device map was generated by anaconda
(fd0)     /dev/fd0
(hd0)     /dev/hda

If you need any more information, please inform me.

Simon