No need to uninstall, just format the partition...

You can copy the format command to a floppy and type format c:

You might want to make that floppy bootable or at least make sure your CD will work as a boot device to install another operating system...

Format program should be in C:\windows\command\

start>programs>Dos Prompt

There are several methods you can use to uncover your lost product key for the version of Windows that you currently have installed on your PC.

Method A. For older versions of Windows you can extract the product key from the Windows Registry. Click on the Start button > on the menu click on Run and then type regedit and press enter or click on OK.

For Windows 95 and Windows 98, browse to this key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\ProductID

For Windows NT 4.0, browse to this key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProductID

Method B. Software: There are some freeware software programs that can help you:

• Rock XP: Free program that lets your retrieve and change your Windows XP Product Key.

• Magical Jelly Bean Keyfinder: One of the best free tool for this task. In addition to finding and identifying product keys for Windows 95/98/ME/NT/2000/XP, it can also uncover product keys for installed versions of Microsoft Office.

• Windows Key Finders : This is actually a group of tools that can be used for unearthing product keys for different versions of Windows.