I want to share my experience of making my computer to have quad boot using Windows XP, Vista, Ubuntu and Fedora. I have a 160GB HDD which I divided into several partitions. First, I install Windows XP on 30GB partition, and then I install Windows Vista on 100GB partition, followed by Ubuntu 8.04 Hardy on 15GB partition. Finally, I install, Fedora Core 9 on the rest of the space (15GB). First, the system will only boot XP, Vista & Fedora only (triple-booting). In order to boot Ubuntu you need to put the *instruction/command manually in menu.lst in /boot/grub folder (in my case: look at title Ubuntu).
*Remember that the system counts from 0, so if /dev/sda6 (my partition for Ubuntu) is equivalent to (hd0,5).
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Below is the content of the menu.lst in /boot/grub
# 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 (hd0,7)
# kernel /vmlinuz-version ro root=/dev/VolGroup00/LogVol00
# initrd /initrd-version.img
#boot=/dev/sda
default=0
timeout=15
splashimage=(hd0,7)/grub/splash.xpm.gz
hiddenmenu
title Windows XP/Windows Vista
rootnoverify (hd0,0)
chainloader +1
title Fedora
root (hd0,7)
kernel /vmlinuz-2.6.25-14.fc9.i686 ro root=UUID=f488b78c-0b37-48f5-81eb-daae2167e966 rhgb quiet
initrd /initrd-2.6.25-14.fc9.i686.img
title Ubuntu 8.04.1
root (hd0,5)
kernel /boot/vmlinuz-2.6.24-19-generic root=UUID=b65a9665-b277-49dd-bc17-84c076b11d7e ro quiet splash
initrd /boot/initrd.img-2.6.24-19-generic
quiet
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Below is my partition information: ($ fdisk –l)
Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x4fb94fb9
Device Boot Start End Blocks Id System
/dev/sda1 * 1 3824 30716248+ 7 HPFS/NTFS
/dev/sda2 3825 19457 125572072+ f W95 Ext'd (LBA)
/dev/sda5 3825 15377 92799441 7 HPFS/NTFS
/dev/sda6 17290 19361 16643308+ 83 Linux
/dev/sda7 19362 19457 771088+ 82 Linux swap / Solaris
/dev/sda8 15378 15402 200781 83 Linux
/dev/sda9 15403 17289 15157296 8e Linux LVM
Partition table entries are not in disk order
Disk /dev/dm-0: 13.3 GB, 13388218368 bytes
255 heads, 63 sectors/track, 1627 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000
Disk /dev/dm-0 doesn't contain a valid partition table
Disk /dev/dm-1: 2080 MB, 2080374784 bytes
255 heads, 63 sectors/track, 252 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x30307800
Disk /dev/dm-1 doesn't contain a valid partition table
