Apple released the new Mac OS X 10.10 Yosemite in the Mac App Store for everyone to download and install for free on October 16th, 2014, but downloading a 5+ GB file for each of your computers will take some serious time. The best thing to do is download it once and create a bootable install USB drive from the file for all of your Macs. Don't Miss: How to Create a Bootable Install Drive of 10.11 El CapitanDon't Miss: How to Create a Bootable Install Drive of 10.9 MavericksJust make sure that ...