Ok, so this is interesting... I have two 2012 MacBook Pros. I cloned over the original HDDs (using SuperDuper!) in both of them to SSDs, and then swapped them into the cMBPs. When I did this, neither laptop had a recovery partition any longer. I went to the iCloud 'Find My Mac' webpage, and it found my iPhone, but no laptops, as expected. So, I thought it would be fun to reinstall the Recovery Partition on the 15", just to see how Find My Mac works. I did so using Carbon Copy Cloner (CCC), and now I have the Recovery Partition on one of the two SSDs in the 15", but it's still not on the 13". I went back to Find My Mac, and now BOTH of the laptops are showing the location! This intrigues me, because the 13" is in Brighton, UK... where I left it. My girlfriend there used it when she woke up a couple hours ago, and it shows that it's greyed out/offline, but last seen there two hours ago. I suppose she turned it off or it's asleep. The thing is, there is no recovery partition on that Mac, so how is Find My Mac seeing it? When I boot into the second SSD on the 15", the one without a recovery partition, it shows that it's still active. It seems it should be greyed out. I expected it to show up as 'last seen X minutes ago' since I'm booted into the SSD without that partition installed. Both laptops are named identically, which may have something to do with it, but I just find it really, really curious that it can see that 13" MBP over there in England without a recovery partition on it, and that it DIDN'T see it until I reinstalled it on the 15". How is this possible? I submit that Find My Mac does NOT require a Recovery Partition, and that there is some other code somewhere that is actually allowing the device to be found. Thoughts?