Re: Trouble making bootable USB from ISO image

[James Medeiros <james.medeiros@gmail.com>]

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 <wooledg@eeg.ccf.org> 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.