It’s called Install OS X Yosemite.app and it should have. Macworld also has bootable-install-drive. How to make a bootable OS X 10.10 Yosemite install drive. Mac os x yosemite 10.10 bootable usb 3.0 32gb flash drive for install/ recovery time. That other less significant portion of your message. E E Hold down the Option and “e” keys simultaneously, release, then type a capital “E”. C Hold down the Option and “c” keys simultaneously, then release. Typing an ASCII Character on the Mac Keystroke Abbreviations: Option key Shift key Space bar Keystroke Examples: a Hold down the Option, Shift and “a” keys simultaneously, then release the keys. In addition, extended characters on the Mac are usually different than Windows because Windows used the and the Mac uses the Roman character set. The chart below may be used to type extended ASCII characters on the Mac from the keyboard.