
DiskMaker X would find the Yosemite Installer and have it installed on your thumb drive. Since we wish to install Yosemite, you will have to select 10.10 and let DiskMaker X handle the rest. Launch DiskMaker X. The app will offer to make installers for OS X 10.8, 10.9, and 10.10.

Make sure you must have backed up all important stuff, as you will loose them in this process from the flash drive.ģ. Insert your 8GB (or larger) flash drive into your MAC. You need to download the Yosemite installer as stated above from the Mac App Store and DiskMaker X. Using Diskmaker X is the easiest way to burn or make a bootable USB Flash drive. The OS X 10.10 Yosemite installer from the Mac App Store in your Applications folder.An 8GB USB Flash Drive or larger where you would be burning the OSX Yosemite copy to.
#Install os x yosemite from usb mac os x#

It is important to note that running the Yosemite update on your Mac before following the below procedures would erase the installer from your Applications folder. One way to save yourself the hassle is grabbing the Mac update on a USB thumb drive and installing the update using same drive on all your Macs. It can be quite easy making an update to the OSX 10.10 Yosemite from the Mac App store for one computer, but when it comes to making updates for several Macs, or even doing a fresh install, you might find it really stressful having to make those updates separately.
