Desinstalaar win7 con xp

How to Uninstall and Remove Windows 7 or Vista Leaving Windows XP on Dual Boot System
Windows operating system supports dual-booting a PC, where users can install multiple OSes and select whichsystem to boot up to on machine startup. If you have installed Windows 7 or Windows Vista on top of current existing Windows XP to make the PC a dual boot system, but now decided to ditch or dump theWindows 7 or Windows Vista partition to revert to the old good classic Windows XP follow the guide below to uninstall and remove Windows 7 or Windows Vista to leave only Windows XP without having toreinstall the OS, and without affecting saved files and data.

Important: Do not use this tutorial if your dualboot system is Windows 7 and Windows Vista.
Boot up and log on to Windows XP desktop.Insert the Windows Vista or Windows 7 DVD installation disc into CD-ROM or DVD-ROM optical drive.
Alternatively, mount the Windows 7 or Windows Vista DVD ISO image on any virtual drive.
Run CommandPrompt, or click directly to Start menu -> Run command.
In the command prompt or the Run text box, issue the following command and hit Enter:
[DVD Drive Letter]:\boot\bootsect.exe /nt52 ALL /forceFor example,
If the DVD drive path is D:, then enter the following:
D:\boot\bootsect.exe /nt52 ALL /force
The step will remove the boot menu to select operating system to start.
Remove the DVD discand restart the computer.
The computer will boot up with Windows XP installation partition.
Manually remove files and folders of Windows Vista or Windows 7, including Windows, Program Files andUsers folder. If you’re installing to separate partition, just format the partition to clean it instantly (with FDisk, Disk Manager of Computer Management or third party partition management softwaresuch as Partition Magic or EASEUS Partition Manager).
On the root system folder of Windows XP, delete Boot.BAK andBootSect.BAK. The two files are remnant backup leftover files of previously installed...