Took a little work, but not bad

My Problem

The stock 500GB was filling with photos, movies, and music.

My Fix

The take down was quite easy. Like others, I had some challenges getting the bottom drive to seat in place.

My Advice

I used the iFixit tool kit, which was a lifesaver! The splunger (sp.) was integral to getting those tiny cords in and out of places. I spent an unnecessary amount of time connecting the power supply to the logic board and seating the bottom HDD into place. To help get the HDD into place, I had it in the neighborhood, connected the Airport antenna, and put that in place. Starting the screws from the Airport to the HDD finalized the seating of the drive in its place.