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Formatting the USB a thousand times (GUID / OS X - journaled) Tried creating the USB by using Diskmaker X 5.0.1 instead of the terminal command (on three Macs) Tried creating the USB on three different Macs (with Mavericks, Yosemite and El Capitan)
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Redownloading El Capitan from the App Store (if something was wrong with the first image) Can't really see how I can do this procedure wrong. Is does mount as it should on my desktop, though, and I'm able to run the installer from the USB. However, the install-USB is not bootable and does not show up i the "Startup disk preference panel". As I've done a thousand times before I created an install-USB by downloading El Capitan from the App Store and compiled it on to the USB-drive by using Apples own terminal command. I have decided to go with a fresh and clean install of OS X 10.11 El Capitan this time.
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