• Does the tutorial format the drive for you? If it’s previously been a Mac usb drive it will probably have GUID partition map, which I believe won’t work as bootable in windows. You can change it to Master Boot Record in Disk Utility.

    I may be talking out of my proverbial, of course.

  • Already tried FAT, EXFAT... It may explain why BootCamp with El Capitan also failed (see image) so might as well give it a try

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