Creating >2TB in Vista Ultimate x64

Hi guys,
I'm tyring to create a RAID5 array to create a 4.5TB array

Here's my setup:
Vista Ultimate x64
Asus A8V Deluxe mb
Athlon X2 4400+
4 x 1.5TB Seagate hd on RAID5 (using HighPoint 1740 RAID card)


What I want to do is create a boot partition (500GB) and another partition (with the rest of the available space) for data.:

The array creation went fine, 4.5TB (4.5T bits => around 4T bytes) RAID5 array was created. When installing Vista, I created the boot partition and after that, the remaining space became 1.5TB, which indicated a BASIC disk was created, which has a limitation of 2TB partition.

After the Vista installation was done, I saw 3 partition on the disk:
- 500GB Boot partition
- 1.5TB unallocated space
- 2TB unallocated space


and I was unable to create the 4TB second partition for Data drive, or to convert the disk into GPT or Dynamic Disk (I guess they can't convert disk that contains the OS).

The question is, how can I create the 2 partition I wanted (500gb and 4TB) under Vista x64? I was thinking about using another drive to install Vista temporarily to convert the array into GPT, remove the temp drive, then re-install the OS in the now-GPT disk. But I read that you cannot boot from a GPT drive.

Any help would be appreciated.
triadykAsked:
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triadykAuthor Commented:
additional info:
my RAID controller allowed me to create multiple arrays using the same 4 physical drives, so I created 2 arrays: one with 500gb, and the other one with the rest of the space.

During installation Vista did see 2 drives, 500gb and 2TB (remember the 2TB limit?)? I created a single 500gb partition on the 500gb drive and selected that drive to install Vista on.

I got this error message instead:
"Windows is unable to find a system volume that meets its criteria for installation"
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Davis McCarnOwnerCommented:
OK; you would be STRONGLY (!!!!) advised not to use a raid array for the boot volume and cannot use a GPT one to boot, anyway.
Best practice would suggest you get a smaller drive to install Vista onto and then use the array for data files only.  Then, if something happens, you can reinstall Vista without having to worry about data.
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