Inside a stepper motor hard drive

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Yüklenen Video Adı: Inside a stepper motor hard drive
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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

The drive has 30 KB of bad sectors, but still works fine.