Curtis Johnstone Curtis Johnstone's Personal Blog

May 15, 2012

A Peek Inside a 3.5” Hard Drive

I have always been curious to open up an old hard drive and look at the inner workings. This was always difficult because of the thick plated steel that protects the moving arm and platter, and the thick bolts with unique socket shapes (Hexalobular screws possibly).

My handy father recently cracked one open with some persistence.  This is what the inside moving arm and magnetic spinning platter looks like. It is a 4 Gb Western Digital circa ~2003.

Hard Drive

After playing with the pieces I was eager to see one in action.

Not to be out done, good old Wikipedia has an excellent article on hard drives including a small video of the inside of a hard drive in action:

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