To install OS X 10.9 Mavericks on your Mac, restart the device, press the Option key immediately after, select the USB drive you just created from the menu, to use it, and follow the guide shown on the screen to finish the install.Also, make sure you already have the Install OS X Mavericks file there, too, and a properly formatted USB drive before continuing.
I have not tested Apple's claims, to see whether it can be used successfully with prior versions. That being said, this option is only aimed at those whose Macs are already running the latest iteration of the Mac operating system, according to the support page. It is not very detailed (which is where the following steps come in), but is to be preferred over dedicated, third-party tools as it is properly tested.
Please verify it is there before proceeding any further.Īpple has created a support page that explains, in large, how to create a bootable USB drive with the OS X 10.9 Mavericks setup file on board. You will then have an app called Install OS X Mavericks in your Applications folder. When the download completes, do not carry on with the install. You can either search for it in the app or access its respective location using this link. No matter the method described below, you will have to download the OS X 10.9 Mavericks setup file from the App Store to create the bootable USB drive.