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.
