This should work without you having to re-install either OS agin (SO LONG AS YOU HAVEN'T RE-FORMATTED THE PARTITION(S)).
Quote: Originally Posted by juanpablo1313
Microsoft REAAAALLY needs to do something when installing XP + 7 on the same computer. I've just installed 7057 and I have the same old problem: can't boot XP.
First when installing multiple OS'es (apart from Linux) the OLDEST OS must be installed first so Windows XP should have been installed first.
To get back to Windows XP boot do the following
1) Insert your Windows XP boot disc and start the windows XP install. If your windows disc is on a SATA drive the windows XP boot disc needs to be slipstreamed with the SATA drivers or you'll get "No Hard Disc found". Use nLite to do this -- thete's info on the nLite site.
2) Now choose Repair system using the Recovery console. Enter the password your User has.
3) Simply type in FIXMBR.
Now the system will boot into XP. (You haven't lost Win 7 yet so long as you haven't re formatted the disk).
Save your data (outlook email or whatever). Note if you use OUTLOOK (part of MS office -- corporate / full / enterprise version) there's a nice little outlook folders backup tool --download it from the Office site it's called pfbackup.exe
After you've finished with XP boot the Windows 7 install disk and perform repair system.
It should fix the boot manager so you can still boot both XP and Windows 7.