How to remove the Windows boot partition from a flash drive?

Question

Windows

Hello! There is a bootable flash drive on which Windows 10 was previously recorded. I decided to burn Ubuntu on it, formatted it (by slow formatting in Windows 10) and using the Unetbootin program burned the ISO image of Ubuntu 16.04
When I try to boot from this flash drive, instead of GRUB, "Please press any key to boot from USB", when you press the key, an error occurs like the Windows bootloader cannot find the operating system files (this is correct, because I erased Windows from the USB flash drive and wrote Linux there).

Answer 1

Good evening.
Using "disk management" in Windows, delete all partitions from the USB flash drive.
Or use a program like Gparted to remove all partitions and format to the file system you want.

Answer 2

Windows 10 uses gpt partition table. I myself do it all the time through gparted, since ubuntu is at hand. I delete all partitions, form a new msdos table and create a partition. Everything, the flash drive is ready

Answer 3

The image is not written correctly, try using Universal USB Installer instead of Unetbootin