OS X Yosemite (OSXY!) is out of the door and it's time to do the USB boot drive.
You will need one of the following:
You can use USB/Firewire/Thunderbolt external hard drive. Although, I like to keep things small and simple.
Oh and you need a Mac running 10.7 or higher.
Prefer the point and click method?
- Get hold of OS X Yosemite from the App Store if you haven't done so already.
- Grab DiskMaker X (hint: click on What's this? to download) and copy it to Applications folder.
- Run DiskMaker X and follow the instructions.
It's that simple.
Or you prefer to do this in Terminal.app
1) Fire up Terminal (Spotlight to the rescue. Command + spacebar, type Terminal and hit enter).
2) Locate your USB/SD drive (be sure you do know what the name of it!)
Here's my terminal print out of the USB drive.
/dev/disk2s2 15Gi 5.0Gi 9.6Gi 35% 1315387 2516409 34% /Volumes/Install OS X Mavericks
3) To erase the disk, since the USB drive is /dev/disk2s2, it is /dev/disk2.
diskutil eraseDisk HFS+ newdisk disk2
The command is to erase the disk, name it as newdisk and HFS+ is Mac OS Extended filesystem.
4) Now it is time to build the OS X USB drive.
sudo /Applications/Install\ OS\ X\ Yosemite.app/Contents/Resources/createinstallmedia --volume /Volumes/newdisk --applicationpath /Applications/Install\ OS\ X\ Yosemite.app --nointeraction
It will prompt you for your password.
Grab a cup of tea or coffee for this bit.
Erasing Disk: 0%... 10%... 20%... 30%...100%...
Copying installer files to disk...
Once it is done, you can now boot to the USB drive. To do this, reboot your mac and hold Option (alt) and select the drive.
If you have some apps that you wish to install from the USB, create a directory in the root of USB drive and store them there. It is handy having to install some applications such as VMware Fusion, Adobe products etc. It is a time saver!