amd64 HP SA6i RAID5 no boot

[Per olof Ljungmark]

Per olof Ljungmark wrote:
> Hi,
> 
> What am I doing wrong?
> 
> 7-Beta3 vanilla install from CD, I let sysinstall do "automatic" 
> partitions and slices, then stops at "F1 FreeBSD" prompt and beeps. 
> Obviously it cannot find anything to boot from.
> 
> System is a SA6i RAID5-array with 6x300GB disks. Possibly I need to 
> enter drive geometry manually but have no idea where to get that info 
> from, perhaps somebody knows where to look?

i386 does not boot either - same
A RAID1+0 array with 4x36GB disks boots fine both amd64 and i386.

So the logical drive size is a problem?