okay my friend just got a new dell, and wants me to reformat it for her, cuz she doesnt want all the crap it come on it. she gave me all the disks and stuff, but none of them say Dell Operating System Reinstallation disk. but it did come with a disk called "For Reinstalling Dell MediaDirect 3.3 on Dell Inspiron 1520 Computers" would that be the reinstallation disk? just need a simple yes or no.