[OpenIndiana-discuss] help restoring a boot block?

[Carl Brewer]

On 21/04/2022 10:48 am, Carl Brewer wrote:
> 
> 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?

Well, I got it back up, it seems that perhaps it was an iffy power 
supply, which may not have been spinning the drives up before the BIOS 
went looking for them.