After installing windows 7 RC I have this new drive "New Volume" where did that come from ?

Hi, I was running Vista 64 on my XPS 730, I never had nor had I ever created a virtual drive or an additional partition on this machine, it  just appeared after new clean install of windows 7, the drive reads 21.3 MB free of 30.9 MB and even after unhiding the drive and any contents it doesn't show one thing. Can I eliminate this or.. Any ideas ?

Thnx Everyone :emotion-42: 

H.G.

2008 XPS 730 64bit OS, Q9550, 790invidia - 2 x GTX280 SLI, Twin WD 150GB Raptors Raid0, X-fi sound, dual Blu-ray optical drives