[Manik07]

I wiped y hard drive the other day using active @ kill disk now the hdd doesnt show up. when i view it in kill disk it says its only 150 gb when before the wipe it was 320 gb

[olliea95]

I assume it wasn't your primary hard drive with the install on it. There is probably something you can do to re-format it in the recovery centre, so I am just going to look it up now, but if you don't have your install CDs, you will have to try doing something from command line.

EDIT: After a quick Google search I found out that you can:
Boot up from your install CD
Select recovery console
Type in: "FORMAT drive_letter:" e.g. "FORMAT F:"

True that you can only do this if you know the drive letter, but there is also probably a command to list all the drives attached, another simple Google will help you.

EDIT 2: I have just remembered that when you start recovery console it will ask you to select the hard drive with your install on it, but it should also list the hard drive you want to format, note the drive letter it says for that and use it in the instructions above. The chances are that the C: drive is probably your primary drive.