I have a MacBook Pro (2009) which has seen it all from 10.5 and up to now where it is running 10.11 on an SSD drive. I want to give this machine to my son, who has his own Apple ID.
macOS is installed belonging to my Apple ID, which I want to transfer to his Apple ID. I created an admin account on the machine and married it to his Apple ID, and rebooted the machine with the “Reinstall current macOS version” keychord down. We got all the way through logging in, but then App Store complained that the macOS 10.11 download was not available to him. Repeating with my AppleID showed that the download was available to me.
My theory is now that macOS is only available if you have “purchased” it (or if it was otherwise registered as eligible). I thought that this could be fixed simply with having a user on an eligible system, but apparently not.
What is the easiest way to reassign? Going back to 10.6 and then upgrading, sounds like a lot of work I'd like to avoid if possible.