This is a common error with older VirtualBox versions (4.3.x). The fix involves uninstalling VirtualBox, deleting the .VirtualBox folder in your user profile, and reinstalling the latest version of VirtualBox alongside its Extension Pack.
. Once the HackBoot menu appears, swap the ISO for your Mac OS X installer and press F5 to refresh Installation : Follow the Mac OS X setup prompts. Use Disk Utility hackboot 1 and 2 iso download