RAID disk size difference

I recently set up a RAID 10 on my system, using four 500GB HDD's. It went
well, and the system sees it as a single 1TB drive, but windows Vista sees it
as a single 500GB drive. When I go into the device manager and look at the
RAID drive, windows sees it as a 1TB drive. Is there a way to get windows
explorer to see the drive for its true size, 1TB? I am afraid it will not
let me write past the 500GB's it thinks exists.

Were, in windows is it seen as 500gb?
Is this done via an onboard controler or an extension card controller?
& whose controler?

"Jason" <Jason@discussions.microsoft.com> wrote in message
news:8937C878-14B0-428C-845E-5851186D9063@microsoft.com...
>I recently set up a RAID 10 on my system, using four 500GB HDD's. It went
> well, and the system sees it as a single 1TB drive, but windows Vista sees
> it
> as a single 500GB drive. When I go into the device manager and look at
> the
> RAID drive, windows sees it as a 1TB drive. Is there a way to get windows
> explorer to see the drive for its true size, 1TB? I am afraid it will not
> let me write past the 500GB's it thinks exists.