Intel dx58so raid 5 failure

[Newb1]

Hello,

 

I have a dx58so board which is discontinued. 

I'm trying to make a raid 5

When I make the raid and enable UEFI boot in bios and try loading windows 10 from the CD my raid fails. If I turn UEFI boot off my raid works but my drive is limited to 2tb.

 

With my UEFI boot on raid 0 and 1 work just raid 5 fails

 

Can anyone assist please

P.s. bios updated to the lastest firmware

Latest rst driver being loaded during windows boot from USB

When the drive is visible unconverted into gpt.  This happened once but then it failed again. 

 

 

Thank you. 

[Electronics Wizardy]

Normally you don't want to boot from raid 5, So is this a boot drive or a storage drive?

 

What bios are you on?

 

What drives?

[Newb1]

I have 4 1tb we drives

I would like to use for booting and storage I'd possible. 

 

What do you mean by what bios?

[Newb1]

P.s when I disable UEFI boot I get the raid 5 to work and have windows installed but it only sees 2tb and says unallocated space of the rest 1tb. 

 

I did convert the raid to gpt while doing the windows. Install