Re: not getting to bootloader screen

Hi,

On Wed, 6 Oct 2021 11:56:19 -0400
"Justin O'Connor" <oconnor@crystal.harvard.edu> wrote:

>  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
> /
> \
from distance it looks like that you have not written the master boot
record (MBR) to the disk.

Erich


> 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