not getting to bootloader screen

 Hi list,

We have a system that will enumerate a list of disks and stops at "can not
get information about disk unit" then it will be disk like 0xaa. The boot
loader screen never comes up.

An example -
...
...
BIOS drive n: is disk43
BIOS drive 0: is disk44
BIOS drive p: is disk45
BIOS drive q: is disk46
can not get information about disk unit 0xaf
/

We are trying to upgrade a server and opted to install on OS some alternate
SSD's and swap the disks to minimize downtime. System boot with 11.x OS
disks installed. In the system there is an 3108 raid card with many disks,
a few nvme's, then the boot disks are a pair of sata disks on a gmirror.
Changing around loader.conf options for mfi/mrsas have no effect. We have
an alternate mfsbsd netboot with 13.0-RELEASE and the same issue
netbooting. We have a replica system (with minor differences in sas
settings) that boots fine with the same netboot image.

Looking at the system booted 11.x system and not finding any logs that
might indicate a hardware issue.

Ideas?

Justin