Apr. 1, 2015. TDK Corporation has announced that its Hong Kong-based HDD head manufacturing wholly owned subsidiary, SAE Magnetics (H.K.) Ltd.
You use a wrench to screw, or unscrew a bolt. A screwdriver is for screws. Either way you turn it left. Some bolts have reverse threads and would turn the other way to unbolt.
Step 3 - Remove the Roof. Unscrew the roof fastenings if possible. If the fastenings are rusted or bent, use the crowbar to pry apart the roof at its top seam, then pry it off the side walls.