I have been running Win XP Pro since a few days after it came out. The PC I am using it on is about 18 months old. Since then I have accumilated a lot of unwanted rubbish in the System 32 and Winnt files. I know that the best way to get rid of this is to reformat the harddrive. I would like to use Windows XP home edition instead. I have a brandnew untouched UPGRADE cd for XP home. This cd cost £90. I would like to install it. I know I can't upgrade of downgrade XP pro. If I reformatted my harddrive would I e able to install this upgrade cd on the harddrive. Or would I need the Full installation cd instead.
Recently I upgraded a friends computer to XP home, and noted that on this upgrade cd there was an option of upgrade of full. This slightly confuses me. Can I install this Home Upgrade cd on my harddrive once it has been formatted.