Grub loader hangs with blank screen

[tlcoons]

I installed fedora 12 to a 4GB flash usb flash drive. When I reboot and select windowsxp, grub displays a blank screen and hangs up.

[root@localhost Terry]# fdisk -l

Disk /dev/sda: 160.0 GB, 160000000000 bytes
255 heads, 63 sectors/track, 19452 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x41ab2316

Device Boot Start End Blocks Id System
/dev/sda1 1 5 40131 de Dell Utility
/dev/sda2 * 6 19054 153011092+ 7 HPFS/NTFS
/dev/sda3 19055 19452 3196935 db CP/M / CTOS / ...

Disk /dev/sdb: 4002 MB, 4002910208 bytes
255 heads, 63 sectors/track, 486 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0e2b5cba

Device Boot Start End Blocks Id System
/dev/sdb1 * 1 287 2305296 83 Linux
/dev/sdb2 288 486 1598467+ 83 Linux

Disk /dev/sdc: 163.9 GB, 163927556096 bytes
255 heads, 63 sectors/track, 19929 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xbf269802

Device Boot Start End Blocks Id System
/dev/sdc1 * 1 26 204800 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sdc2 27 8456 67713975 83 Linux
/dev/sdc3 8457 19929 92155904 8e Linux LVM
[root@localhost Terry]#

[root@localhost Terry]# 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 do not have a /boot partition. This means that
# all kernel and initrd paths are relative to /, eg.
# root (hd0,0)
# kernel /boot/vmlinuz-version ro root=/dev/sdb1
# initrd /boot/initrd-[generic-]version.img
#boot=/dev/sdb
default=0
timeout=5
splashimage=(hd0,0)/boot/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.31.5-127.fc12.i686)
root (hd0,0)
kernel /boot/vmlinuz-2.6.31.5-127.fc12.i686 ro root=UUID=2b0ee4e9-b9c5-4a08-9225-6b6f4e3649f3 noiswmd LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rhgb quiet
initrd /boot/initramfs-2.6.31.5-127.fc12.i686.img
title WindowsXP
rootnoverify (hd1,1)
chainloader +1
[root@localhost Terry]#

When I change rootnoverify (hd1,1) to (hd0,1), I get error 13: Invalid or unsupported executible format.

[stoat]

Originally Posted by tlcoons

When I change rootnoverify (hd1,1) to (hd0,1), I get error 13: Invalid or unsupported executible format.

Since Fedora is booting okay with that root (hd0,0) command line, it is not really possible for Windows to have boot loader files on (hd0,1). But it is possible that /dev/sda and /dev/sdb and (hd0) and (hd1) are reversed from their normal relationships as far as GRUB is concerned. So go with that for now and try this in the Windows XP section of the grub.conf...

title Windows XP
rootnoverify (hd1,1)
map (hd0) (hd1)
map (hd1) (hd0)
chainloader +1

No promises. But it won't hurt anything to try. The spaces after the word "map" and between the middle parentheses are important.

[tlcoons]

I added the map lines to grub.conf. Fedora starts okay. Thanks.