Back to DOS
Having bodged an old PSU for my old machine (why do I bother?) I have now managed to get DOS 6.22 on C via A.
Still not out of the woods though because it can't see the CD drive or the other HD.
From my hazy memory of DOS, I put LASTDRIVE=Z into config.sys thinking that might wake it up to the other drives - it hasn't.
Have I forgotten something?