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How to copy a file (boot file) to address zero on a USB flash drive?

I am using Ubuntu.

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migrated from May 10 '10 at 18:01

This question came from our site for professional and enthusiast programmers.

dd if=filename of=/dev/yourusbdrive

Note, this will overwrite the partition table of the device! If that's not what you want, please explain what exactly you want to achieve!

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I want to make dummy OS and load it from usb flash , i have the binary of the bootstrap loader – salamonti May 10 '10 at 15:56

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