A friend of mine recently bought a new laptop and passed me his old Macbook Pro 6,2. I think he had Lion on it, but the installation CD has been long lost.
I put in a new disk (he kept the original one), but how do I install OS X now?
Command+R gets me into Internet Recovery, but asks for an Apple ID (well, I registered for one). Then it complained the Apple ID was not used on iTunes (well, I loaded iTunes on my Windows laptop and set up the account, added the credit card details, etcetera, I even registered the serial number to my Apple ID on the website).
Now it tells me that my Apple ID has not purchased Mountain Lion, but will not let me buy it from there, nor can I do it from iTunes. According to this Apple support question, you have to use
one of your personal authorized Macs
Well, I don't have another Mac! How am I supposed to do this?