There are a lot of mysteries in this universe, not least of which is the way Apple builds their computers. They have computers like the Mac Pro which is wonderfully assembled and easily expandable. Then you have the iMac which is a sealed unit and a bitch to upgrade, other than memory. It seems some mental midget at Apple figured that memory was the only thing that customers would ever want to upgrade, replace, or that would go bad. Of course, if your hard disk goes bad you have one of two choices: bravery or a Mac shop. The former requires some digging on the network to find how to take apart an iMac and then the bravery to actually do what the steps entail. I’ve done that, and trust me it’s a pain. Taking it to a Mac shop is, in my opinion, stupid when all you want to do is replace a defective drive. Why didn’t Apple make it easy to replace the stupid drive? After all, it is a SATA drive so how hard would it have been to create a small door hidden in the back to easily swap out the drive. It’s why I don’t
