The operating system is available free of cost and some new addition have been made in this version like maps and iBooks are now available on your desktop. This update has a great stress on the life of the battery and improvements have been made for the power users. OS X Mavericks is the 10th release of the OS X. Mac OS X Mavericks was released worldwide in October 2013.
It is complete bootable Mavericks 10.9 DMG Disk Image for Clean OS Install.
Mac OS X Mavericks Free Download DMG 10.9 Bootable Installer Version.