386 to 486 upgrade kit

-1

The primary reason low-level formatting cannot be done is because modern drives do not use stepper motors to locate tracks, and hence there is no way to determine where tracks should be recreated on the media. Instead in modern drives the heads are positioned using a stepless analog servomotor, often referred to as the voice coil since it operates almost exactly like an analog audio speaker.
Modern drives locate tracks based on special servo control data permanently written to the drive platters at the factory by the hard drive manufacturer, using highly specialized equipment. Early servo-controlled drives used an entire separate disk platter to store this read-only servo data,[3] but this was inefficient. Modern drives store the servo data directly embedded among the regular tracks and sectors, and operate in a manner so that servo data is absolutely never overwritten for any reason. Loss of servo data results in a loss of the ability to locate the data tracks.

http://en.wikipedia.org/wiki/Low-level_format#Transition_away_from_LLF

Az biztos nem low level format volt, ami nem tette tönkre a meghajtót... vagy ld feljebb, nem csinált valójában semmit.