How to prepare a Yosemite OSX usb install drive


Here How to prepare a Yosemite osx usb installer

Download yosemite from here

1. In applications folder, right click on Install OS X 10.10 Developer Preview, choose "Show Package Contents".

2. Open Contents / Shared Support

3. You'll see a Packages folder. Open terminal, enter:

open "/Volumes/OS X Install ESD/BaseSystem.dmg

4. Using Disk Utility, restore OS X Base System to your USB Stick. (Took a couple of times for me)

5. On the USB Stick, in System/Installation delete the link named Packages

6. Copy Packages from OS X Install ESD to the System/Installation folder on the USB Stick

7. Unhide files from the OS X Install ESD dmg to copy BaseSystem.dmg and Basesystem.chunklist (they are both hidden) and copy them onto the USB stick (not in a folder, top level)

8. Unmount USB stick. You now have a full bootable USB stick with the OS.

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