I usually use dd; the following should also work (someone jump in if I'm misunderstanding the question). Also second what Greg said, make sure your USB isn't mounted.
dd if=<ISO file> of=/dev/sdf bs=8M On Fri, May 3, 2019 at 12:54 PM Greg Wooledge <[email protected]> wrote: > On Sat, May 04, 2019 at 01:50:31AM +0900, Mark Fletcher wrote: > > it auto-mounted. > > > So as root I did: > > > > cp <ISO file> /dev/sdf > > You need the device NOT to be mounted when you do the cp. This may mean > you have to turn off your auto-mounter, or (better still) just log out of > your Desktop Environment entirely, and log in as root on a text console > for this operation. > > If the device is mounted, that will interfere with the raw byte writing > you're doing. The results are unpredictable. > >

