I've often suspected that drives need a burn-in period of light activity to seat the head bearings under real-world conditions. All metal bearings have an initial adjustment period - so for example if you drive your new car too hard in the first 1000 miles or so, you'll shorten its life by half.
The first thing you did was install 10 operating systems - that means a LOT of head motion in the early life of the drive. Also, how you mount the drive determines if work against gravity is going on. The tolerances are so tiny that even the slightest unnecessary stress should be avoided. Third - are you sure the ancient OS/2 DASD interface didn't overstress the drive by doing something stupid like fucking up the interleave?
Next time, install Windows and live with it for a month, then start tinkering.