To install Mac OS X Mavericks 10.9 from the ISO or DMG image, follow these steps:
: If you previously "purchased" (downloaded) Mavericks, open the App Store on an older Mac, go to the Purchases tab, and find it there to re-download. mac os x mavericks 10.9 iso and dmg image download
If someone you know has ever downloaded Mavericks, it remains in their tab of the Mac App Store. Ask them to log in, download the 5GB installer, and copy Install OS X Mavericks.app to a USB drive for you. To install Mac OS X Mavericks 10