how do u use a usb drive?

[dark_n1ghtmar3]

i have a hardrive i wana use in the OS but everytime i try it wont show it in the OS i tried a usb flash drive it says its captured but it wont show it in the os wat am i doing wrong

[mpack]

If you are going to refer to an error message, or any other relevant onscreen message, then please tell us exactly what it says, or even better post a picture of it. Do not paraphrase. If you don't give adequate information then you are unlikely to get much help.