I don't comprehend why Apple does this but it's not relevant I suppose. None of the currently available instructions or methods are working to create the ISO at this point - the methods that worked for previous versions of OS X (even the GM candidate build of El Capitan itself from just a few weeks ago) DID actually work with the well known and published methods of creating an ISO from the installer app, but the final release of El Capitan has some changes in it and those methods don't work anymore, none of them.įor me personally I want to be able to create a working functional-without-issues bootable ISO which is the most efficient tool to use for virtualization purposes when it comes to installing the OS above and beyond all other means of doing such a thing, better than physical media of any kind whether it's a bootable hard drive, bootable SSD, bootable optical disc aka DVD, or even the popular bootable USB stick nowadays.
As has been stated a few times in this thread specifically - reading is fundamental, folks, but reading with comprehension is a must - the topic at hand is about creating a bootable DVD (since El Capitan is so large it requires a DVD9 single sided dual layer media) - it is not about making a bootable USB stick which is easy and El Capitan's installer even has that capability from the command line (the createinstallmedia command).Īpple has modified things yet once more and now it's either completely impossible (unlikely) or just very damned difficult (the most likely case) to create a bootable DVD from the El Capitan installer app.