[Info-vax] booting on a single disk from a shadowset

[Tom Adams]

I am looking into this because I was thinking about writing a system recovery SOP for a failed computer that has a good disk. (I already have a software-based recovery procedure, but it's more involved.  I was thinking a hardware-based approach could be better in some circumstances.)

dsa0 has dka0 and dka100 as members with dka0 the master member.

If I take down the system and disconnect dka0 and try to boot on dka100 then the system seems to hang during the boot (but maybe I did not give it enough time).

I am pretty sure that if I disconnected dka100 and left dka0 connected then it would boot OK, but I can't recall trying it.

The question is: Is there a quick way to get the system to book as a shadow-set on dka100 when dka0 (the master member) is gone?

That way, someone could just pull a good disk out of a failed ds10, pop it into a spare ds10 and boot to recover the system.