Here is a little deeper explanation on the subject. It is about mavericks but all the old installers are like that:Well, I said they're identical because the SHA-1 signatures of the two downloads are identical. The odds against them being different are quite literally astronomical. Still, I could've made a mistake so I'll try again, but it might be a while - I'm actually packing to move and most of the computers have to be boxed up. But I'll do my best to get to it.
I can't create a bootable OSX Mavericks Install USB Drive
I've downloaded Mavericks from the App Store, repartitioned a 32GB USB key, and followed the instructions. Specifically, I ran: sudo /Applications/Install\ OS\ X\ Mavericks.app/Contents/Resources/
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