Installing ESX 3.5 on HS21 XM

Hello All

I am trying to install ESX 3.5 on a brand new HS21 XM (IBM blade) with 73GB 10K NON hot-swap SAS drive.  When it comes to finding the disk where ESX is going to install ESX 3.5 cant find it

If i try to install ESX 3.0.2 on the same machine, it goes thru fine.  No problems at all. It finds the drive. 

Can someone tell me what am I doing wrong or what do I need to do to fix this problem

BIOS on the machine is 1.04. 

Thanks

Abid