
When I tried to run that the other night, it would only make a boot disk for Yosemite, Mavericks or Mountain Lion.


In years past I had an app in my Applications folder called DiskMaker X 4b4. Jake, here's what confused me and still does to an extent. You will have some options to select HOW the installation is to go, so you'll need to pay attention to the options.
#Diskmaker x el capitan deutsch install
Once done, the way to install from the USB drive is to boot from it and follow the instructions that result. What you should have done is to run Diskmaker (the correct version) with the Install file in your Applications folder where Apple puts it, let it build the USB drive as it does and then you can do whatever you want with the Install app. If it was just unloaded, it should have the latest updates included. But depending on the version of El Cap the installer installs, there may now be updates that you may have already installed. Fortunately, you were running El Cap already and by default the installation does not destroy your own data, it just reinstalls OVER what is there already. So, what you did is what you thought you did: You installed El Cap to your boot drive. And it doesn't ask for any approval because by running it, you give approval to do that installation. It doesn't ask what OS you want installed because it only installs El Cap and it doesn't ask where because it only installs to the boot drive. I fear that by clicking on the app on your application folder it installed El Cap to your boot drives because that is what it does.

I have always first downloaded the installer myself, then launched Diskmaker, so that's just a guess. I guess what happened is that Diskmaker looked for the installer, didn't find it so it downloaded it for you. What Diskmaker does is to extract from that installer the files it needs to make a USB drive bootable, then continues to create a bootable and automatic installer on that same USB drive, again using the Install OS X El Capitan app from Apple. Install OS X El Capitan is the actual installer from Apple to install El Cap on whatever drive you boot from.
