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I have problem installing macOS High Sierra from App Store. I don't understand what the problem is, but when the download completes it suddenly resets. Then when I open up App Store again it only lets download the os again. I want to clean reinstall High Sierra on my Mac and the only way to do it is to create bootable flash drive because I have a bad internet connection. I have downloaded macOS High Sierra combo update with a download manager, and my question is can I create bootable flash drive with this combo update?
Jesus Vigo goes over the steps to create a bootable USB to install OS X 10.7-10.8 and OS X 10.5-10.6, as well as how to put multiple versions on the same USB.