Using Zenworks Imaging in combination with XP and Sysprep. I just realized that my C: partition is only 20gb and I have an 80gb hard drive on all these pc's. Okay, fine, so I added the ExtendOEMPartition=1 switch into my Unattended section of sysprep.inf file, re-ran sysprep..booted to PXE, took an image, restored it, let sysprep do its thing, boot up windows.. my C: was still 20gb.

What gives? :( My understanding is that ExtendOEMPartition=1 should make the C: 80gb now. Wrong?