Open the Linux terminal, add the WinUSB repository if required, then install it using package management commands like sudo apt-get install winusb.
Insert a USB with sufficient storage (at least 8GB). Ensure no important data is on the drive, as this process will erase it entirely.
Launch WinUSB. Choose the Windows ISO file you wish to make bootable, then select your USB drive as the destination.
Choose the format option to prepare the USB. WinUSB will handle the format; however, double-check that no critical data remains on it.
Click on "Install" or "Create" to start transferring Windows files to the USB. This may take several minutes, depending on file size and USB speed.
Once the process completes, safely eject the USB. Test it by booting another machine to confirm it boots into Windows installer.