CDiFan237 / Jev the Fox | Inside a stepper motor hard drive @CDiFan237 | Uploaded December 2010 | Updated October 2024, 19 hours ago.
An old Miniscribe stepper motor hard drive opened up, booting MS-DOS 6.22 and WIndows 3.1.

Drive specs:
Model: Miniscribe 3650
Cylinders: 809
Heads: 6
Write Precomp: 128
Sectors: 17 (26 with RLL formatting)
Capacity: 40 MB (60 MB with RLL formatting)
Year built: 1988

Note: This hard drive no longer works as of 2012. I plugged it in a while ago and it wouldn't even spin up anymore. R.I.P Miniscribe.