Vista will fit into 12-1/2 GB. Vista does not like living on stripes.
You could disconnect the RAID, give Vista a 40 GB partition on a new
plain old SATA boot drive, then plug in the array. That's what I did.
I had to persuade Vista to see the array, but it did, and it's stable.

"Stan Kay" <stan.kay@ntlworld.com> wrote in message news:%231q2q4yOHHA.3268@TK2MSFTNGP03.phx.gbl...[color=blue]
>I am trying to install Windows Vista Ultimate (build 6000) on my PC but when
> it completes the system it then produces numerous "not responding" messages
> and is almost unusable. After a tedious amount of time waiting for the
> system to allow me to do something, I have established the following:-
>
> 1. The iaStorV issue relates to the Intel 82801HR/HH/HO SATA Raid
> controller built into my ASUS P5B Deluxe motherboard.
> 2. iaStorV.sys is a driver loaded by Vista for this raid controller
> 3. I am using 3 Seagate Barracuda 500 Gb hard drives in RAID 5 and there is
> an issue with the RAID controller that causes the problem.
>
> I have tried to report this matter to ASUS technical support but their
> system refuises to accept my report on the grounds that I have given them an
> invalid email address - there is nothing wrong with my email address!
>
> Can anyone please offer any assistance?
>
>[/color]