No need to carve, save money. Don't wubi the double system. Start the Ubuntu mirror with the Grub boot and install the CD. Grub is equivalent to http://www.aliyun.com/zixun/aggregation/27878.html "> virtual optical drive and can boot the system from this optical drive. This principle can start many mirrors, including WinPE, and so on.
Start Ubuntu using Windows Grub boot See this article:/linux/ubuntu/install/99985.shtml
Configure the C:\menu.lst file to open the C:menu.lst and add the following passage inside. Title Boot ubuntuisofind--set-root/ubuntu-9.04-desktop-i386.isomap--mem/ubuntu-9.04-desktop-i386.iso (HD32) Map-- Hookchainloader (HD32) boot
Save and exit.
Six, download Ubuntu-9.04-desktop-i386.iso image file, save to X:\ directory, x represents any one of the letter under XP. Be sure to put it in the root directory. As for why, we should all be clear.