Recently my main Empeg unit (one I have upgraded the disks on) started having problems with the rotary encoder/knob. Luckily I have two empegs and so I just swapped the disks from my main unit to the spare and carried on with my main disks in the spare (now main) unit. All good so far.

I then purchased a new rotary knob and have now replaced it in the faulty unit (fiddly to get at be I think I have done OK).

But when I boot this up I get a "No hard disk found. Contact support" message. I checked the cables and all seems OK and I can hear the disk spin up.

I think this is because this is a old unit (Empeg) that now has a new disk (Rio) stuck in it?

So I now want to reinstall from scratch on this Emppeg - there used to be instructions on how to do this on this board but now I can't find them - lots of dead links. So can anyone point me in the right direction please?