I love computers. I am an aspiring computer engineer (and a current Senior in high school). I am on our school's robotics club as the lead CADer and 3D designer, and outside of school, I love just about anything having to do with computers. Since the age of 5, where the first thing I ever took apart was a treadmill, I have been hooked on disassembling anything and everything to see how it works. I'm not sure of my take-apart count as an exact number, but I have taken apart no less than fifty computers, thirty printers, 150 hard drives, and so much more. I also build many projects as well. As you can see by my profile picture, I have built a 3D printer from scratch (no directions), as well as from mostly 3D-printed parts. I have also built a fully-functional backyard aluminum/brass/copper forge, a twenty foot tall trebuchet, and quite a bit more. Feel free to ask me any questions about what's inside or outside of electronics, and I'll try my best to answer your questions!
I apologize for the wait! (Haven’t been on iFixit in a few months, obviously!). Most modern drive’s motors are held in by screws and/or just a pressure fit, so even once you remove screws (if there were any to begin with), the motor may still seem to be stuck inside the casing. Try hitting it with a hammer a few times on the back of the drive and it should pop out; otherwise, I’d just say bolt-cut the casing to pieces so the motor falls out. Cheers!
Agreed - I just got an old drive and thought some may want to see it. Quantum was bought by Maxtor in 2002 (and therefore stopped making their signature non-anodized silver drives at the same time). I've personally disassembled well over 150 hard drives ranging from 1990 to 2010, and have never had any mirrors or glass of any sort inside of the drives (This excludes the glass platters of 2.5" HDDs).