i got some drives from local second hand store (like ebay)
one of them was got some bad sectors 50-60Mb total . ( well actually it is normal for 10.000 Power on hours
i connect ide adapter wrong.
. i burnt MCU
. so i decided to open it and look inside.
it is very old and interesting drive. it hasnt got any ramp system or airlock or load - unload system. and heads can move easily without spinning.
so i take a video .
video : https://www.youtube.com/watch?v=gFPALjAz9LA
i hope you enjoy