Sites tend to recommend usb pen drives these days because CDROMs and DVDs have become unfashionable. But installation images are always set up to boot equally well from either medium. If the size is more than 750 MB, you need a DVD or a pen drive, not a CD.
The .iso file is the image. The .sha and .md5 files are "signatures". If you have the right software (I don't know if it exists on Windows) you can check the file against its signature before burning the disk to reassure yourself that it hasn't got corrupted in transit.
In the days when I used Windows, you burned a CD with Nero Burning ROM. And there was an option in that program to burn a complete disk from an image rather than dragging individual directories into a window. I don't know what software Windows uses today but it will have that same option in one of the menus and that is what you must use if you want a bootable disc.
Last edited by hazel; 09-24-2019 at 03:57 AM.
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