I assume that C: is your boot drive. You cannot copy files that are in use using a simple copy operation. To do a backup of the C: drive, you will need to use the backup program that is part of XP and allow it to do shadow copy. It usually works fairly well. However, the best way is to create an alternate boot install on your D: drive, or boot from a specially prepared boot CD (not a job for the novice). Then boot to the alternate boot and do the backup. None of your normal boot files will be in use and will copy fine. Peter ---------------------------------- [log in to unmask] -----Original Message----- Hi, this is my first post here. I am trying to back up my entire hard drive onto a recently purchased Fantom External USB 2.0 Disk 80GB Drive. My hard drive is partitioned into C & D. I can copy the D drive just fine, but when I try to copy the C drive, it tells me that the hiberfil.sys is in use and it cannot complete the process. Does anyone know how I can get around this? I don't know if I want to disable my hiberfil, but if I do, will that solve the problem? Has anyone disabled the hiberfil and had a bad/good experience. I am a relative newbie and still learning the lingo, so please, talk down to me! :) Thanks for your help! Stephanie PCBUILD maintains hundreds of useful files for download visit our download web page at: http://freepctech.com/downloads.shtml