Dual boot on A3000T: Workbench versions

[altivo]

I have here an A3000T that was set up back in 1992 or so for beta testing new Workbench releases. The HD obviously has WB version 2.1 and version 3.1 installed. There was apparently a trick for getting a ROM menu at powerup to let you choose which version of WB to boot up. I think it was probably a keypress or combination.

The machine boots 2.1 by default and runs just fine. Does anyone remember how to select the boot options? Thanks.

Edit 2 hours later: Answer found. Hold down both mouse buttons while booting. :)

[Piru]

http://www.gregdonner.org/workbench/wb_b14.html has something about A3000 at least. Not sure if this is the thing you're after, however.

[AmiGeezer]

Assuming both versions of WB are on different partitions then hold down both mouse buttons when booting and select the partition to boot from

[altivo]

That was it. Shortly after posting the message, I found those instructions on a loose printed sheet inserted into the "Using the System Software" manual. Thanks.