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smh300x26

macrumors newbie
Original poster
Oct 16, 2014
3
0
Ok I have made a Yosemite USB Installer. Can I add Mavericks to it and be able to install either one? Thank you
 
The only way would be to have at least a 16gig USB, and partition it 50/50. Create the Yosemite installer on one partition, and Mavericks on the other.

Not sure if it'd work. Otherwise, use two separate USB sticks for each.
 
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