i know this much: on compaq presarios the default drive letter for the recovery partition is D, so if you have not modified your drive letters in any way, do not delete or modify drive D because most likely this is your recovery partition. if you delete it you will not be able to recover your computer if something went wrong.
the d drive isnt dvd or cd...........i think its that partition drive.....so wut do i do if my d drive is almost filled up?........could it affect my computer speed??
That's the recovery partition.. basically, don't touch it. If you've got some junk on there, delete it. It should remain exactly as it was when you purchased your computer since it is used for recovery purposes in case something goes wrong.