In removing the operating system, which is better, completely remove the whole operating system or just delete by parts? What is the good thing in removing the operating system completely?

what's the operating system you are trying to uninstall?

how can you remove in parts unless you are trying to uninstall some software...

Reformat - All data will be gone so make sure you backup before doing this...

Formating a hard drive too many times can cause major problem to the hard drive it self. Therefore, before you make your decision on uninstalling it,please, be advice that not all operating system are compatible with every piece of hardware. Is always good to install a new "Os" operating system into a fairly similar or a exact new device for the the safe of your data and PROBLEMS!

which os you want to uninstall

actually there are many conditions with this question.if u completely format or remove ur operating system then then ur full space will be retrieved and u can reuse it inn a better way... if u want to install the same OS again then !st try to repair ur OS, if then also the probvlem is not removed the format it..in deleting in some part may be the affected part may not be deleted or may be some system file get deleted with it. which may create some from in future...so in my opinion u must remove OS fully by creating a back up for ur important doc.. thank u

for removing you can format system partation with bootable windows cd

Boot system from XP CD. Then format the harddisk, reinstall the operating system. This would be the best solution.

Yes Srimar is right