I never thought that that might be necessary. Thanks for the tip! But it's probably too late now anyway :-)
I was going to see what I had on that old AT hard disk.
I had a 486 that hasn't seen power since 1993. I tried powering that up, but the POST beeps suggested the keyboard controller had failed. Oh well. So I pulled out the drives, and my external IDE controller wouldn't recognize them. But my old Windows XP box's controller did, and I was able to read the old drives (200Mb and 500Mb respectively). It was kinda fun to see what detritus I'd left on them, but sadly no gold bullion.
That 486 was the last machine I had that would boot OS/2. Oh well! To the dustbin of history.