Load iCloud from old Mac, then erase the Mac
My wife has an old MacBook Air that she hasn't used in more than 2 years. She may have some files on it she'd like to keep, so I'm thinking I'll hook it up to iCloud (if it'll still boot up!), move all her old files to iCloud so she can get to them from her iPad, then wipe the MacBook. But that begs the question: Will files I load to iCloud from the old Mac disappear when I wipe it? Note that I won't delete anything from the Mac - just erase it so it can be recycled. Of course, if it won't boot anymore, then this question is moot.