Re: How to restore from winxp backup and dual-boot?
You want to remove your hard drive which has Windows 7 from the pc before you attempt to do anything with the windows XP install. What would likely happen is xp will install the ntldr files onto your windows 7 drive and simply break your W7 install.
If you put in an XP cd and don't get the option to repair the install, but xp can see the hdd, that means you're using the wrong disc. It has to be the same disc that was used to install the OS with. There are suttle differences that seem to conflict and don't work.
On windows XP ntldr will always be located on the root of the hdd. It's probably there if the install was at least blue screening before because that means it attempted to boot windows.