This is mostly just a hypothetical question. Unless I decide to do it some day. I have an old E-Machine, I guess about 6 or 7 years old with XP It's not working now Don't remember what was wrong with it. But it was about a $300.00 repair I also have a Lenozo Less than a year old with Windows 7. Can I put the E-machines Hard Drive In my Lenovo, along with the Hard Drive it already has? I don't need it for extra Hard Drive space. My Lenovo Hard Drive is 1 TB. There is just a lot of music on the old Hard Drive I'd like to have again. I've got about 1000 song I downloaded from Kazaa ( I think that's how you spelled it.),. and I worked hard to get them. I was using Dial up ;-) Thinks in advance for any help I just thought with a 1tb Hard Drive. Would they even bother making a slot for another Hard Drive?