I have a 2006 imac which was installed with lion and now I've got it to a point where the OS became corrupt. I've put a maverick install on a bootable USB but when I boot from the USB doesn't give me the option to "Install OSX" it only gives me the option to "Reinstall OSX Lion" which doesn't work because that is no longer availaibile from the app store. I've tried to format the harddrive and that doesn't change anything.
My question is, how do I get the option to install a new OS fresh instead of only being given the option to reinstall Lion which does not work.