[OpenIndiana-discuss] help restoring a boot block?

[Carl Brewer]

My OI server fell over last night, for reasons unknown, and now the BIOS 
doesn't see any boot devices.

I booted it off an OI USB drive, and I can see and mount the zpools, so 
they're ok (at least superficially) using zpool import -ad /dev/dsk

I have 2 zpools, a zfs mirror for root and a zfs zpool tank. Both seem 
to be intact, it's just that the BIOS doesn't see a boot device.

I've poked around at the BIOS trying to make sure it's in the right 
mode, it can see the drives when I look at its SATA config.  Maybe the 
BIOS got upset at reboot - I don't know.

But - I'd really like to get the machine back up and running, is there a 
way to check if the boot blocks on the mirrored rpool are ok?

Thanks!

Carl