I am trying to install the Public Beta version of El Capitan and after about 10-15 mins of trying to install, a message pops up that says 'no packages were eligible for install' and the installation fails. Here's what I've tried so far: Restarting with command + r: - I do not have a Time Machine backup. Eventually, however, the installation failed with a different message: No packages were eligible for install. Contact the software manufacturer for assistance. Quit the installed to restart your computer and try again. I tried using 'Internet Recovery' ( Option + Command + R) and a bootable USB drive that contained El Capitan, both of which.
I have downloaded the El Capitan dmg file (InstallMacOSX.dmg) provided by Apple. The expanded dmg image contains the package 'InstallMacOSX.pkg' which should be run to create the El Capitan installer but fails with the following message 'This version of OS X 10.11 cannot be installed on this computer.' presumably because quite reasonably it would not make sense to install on top of a later version of the OS. However in this case I want to create a boot USB drive for an installation on another Mac.
I am stuck in a chicken and egg situation where I need another machine running El Capitan or earlier to create and El Capitan boot installer.