Patrick Bougie — web developer / entrepreneur from Montréal, Canada. Founder of WorkSked — a web app to manage employee work schedules and time off.

Bootable OS X Yosemite USB install disk

First, download OS X 10.10 Yosemite from the Mac App Store.

Once you’ve downloaded the installer, launch Terminal from the Applications » Utilities folder.

To create the install disk, execute this command:

sudo "/Applications/Install OS X" --volume /Volumes/Untitled --applicationpath "/Applications/Install OS X"

Where Untitled is the name of the destination volume — your USB flash drive.

You’ll have to enter your account password before proceeding. The utility will then prompt you to confirm that the disk can be overwritten. That’s it.

Feel free to contact me if you require development services or have any questions / comments.