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Keep Your Connection Secure Without a Monthly Bill. If you're not sure if you're going to like Yosemite over Mavericks, I would suggest adding another partition to your Mac and installing Yosemite there, that way if anything goes wrong, your Mavericks installation will still be untouched. If it doesn't work, try one of the other methods out to start over. If you got the "AppleEvent timed out" error using DiskMaker X, more than likely it'll still work. If you're getting an Undefined error: 0 warning when trying to install, this more than likely means that you forgot to perform Step 6 above, so make sure to copy over those two BaseSystem files. The third USB stick I used was successful, and it took less than 15 minutes for Yosemite to boot up. This happened to me on the first couple tries, where it would freeze at 5 minutes left. If the installation of Yosemite freezes, it's probably because your USB drive is corrupted in some way.
#Bootable usb os x snow leopard mac os#
#Bootable usb os x snow leopard how to#
To see how to correctly format your USB drive, please see Step #1 below in the "The Hardest Way" section. Just make sure your USB drive is already formatted correctly before proceeding. If you're more comfortable with Terminal commands, this is the method for you. If it's more toward the latter, you might get a " AppleEvent timed out" error, but it should still work, according to the developer (it worked for me).
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It could take anywhere from 15 minutes to to 45 minutes to finish, depending on your USB flash drive. Then just follow the rest of the prompts to start the disk-making process.
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