: You can download the OS X 10.10 Yosemite Installer DMG directly via Apple's content delivery network.
This is a Gatekeeper issue. Control-click (right-click) the DMG and select instead of double-clicking. Then click "Open" in the security dialog. mac os x yosemite 10.10 5 download dmg
If you are searching for the , you have likely discovered that Apple no longer lists it prominently on the App Store. Here is how to obtain a legitimate copy. : You can download the OS X 10
Once you have the , you likely want to perform a clean install. To do this, you’ll need a USB drive with at least 12GB of space. Open the DMG: Double-click the downloaded file to mount it. Then click "Open" in the security dialog
You do not need a raw DMG. Once you have the Install OS X Yosemite.app , create a bootable USB in Terminal: