How Can I Make A Bootable Disk With Cfdisk On Gpt Label?

I want to install ArchLinux, but i have a problem. When i open cfdisk(gpt), there is no bootable option. I pressed b, but it doesn't work. How can i make my disk part bootable? (sory for my bad english)


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I am new to the installation of Linux, and wish to install 3 different distro's on the same hard disk.

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Here's a quick video of what's going on so I don't have to try to explain.

https://www.youtube.com/watch?v=z4Zj...ature=youtu.be

Just saw how laggy the video was, I say "Why won't the ISO pop up and then let me create the bootable USB?

Also when it tries to format my USB, this comes up.

http://imgur.com/uZUGPuk

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no caching mode page found

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