Install Ubuntu 8.04 from Hard Disk

• Make an ISO file ubuntu804.iso from Ubuntu's LiveCD (8.04 desktop), put the ISO file in D:/ubuntu804.iso
• Mount the ISO file or the LiveCD, copy two files CDROM:/casper/{initrd.gz,vmlinuz} to Windows drive D:/
• Download grub4dos, extract its files to C:/
• Edit C:/boot.ini, add one new line: C:\grldr="GRUB4DOS"
• Edit C:/menu.lst

title Find and Install Ubuntu
find --set-root /ubuntu804.iso
kernel /vmlinuz boot=casper iso-scan/filename=/ubuntu804.iso
initrd /initrd.gz

• Reboot Windows XP
• Select GRUB4DOS from the boot menu
• ... ...
• Will boot to the same screen as if you're directly booting from the LiveCD.