Or does it leave it as MBR? Reason I am asking is I created a Mavericks install USB with Transmac on my Windows 10 machine, I formatted it in Transmac and Restored to it with my Mavericks DMG but when I attempt to use it on my iMac with a brand new blank SSD the iMac shows no storage drives accept for a device that has an round icon with EFI in the middle and when I click the arrow button I get the blinking folder with a question mark in it. Did the USB thumb drive stay with MBR when I formatted it with Transmac and that is the issue?