Re: Trouble making bootable USB from ISO image
On 2019-05-04, Mark Fletcher <mark27q1@gmail.com> wrote:
> On Fri, May 03, 2019 at 12:54:17PM -0400, Greg Wooledge 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.
I'm intervening here merely to point out that just because the user's
external usb device is auto-mounted does not mean that said device
cannot be unmounted by the usual methods (at least I have yet to
encounter Greg Wooledge's auto-mounter from Hell that will not permit
it).
>> If the device is mounted, that will interfere with the raw byte writing
>> you're doing. The results are unpredictable.
>>
>
> This makes sense to me; confession time -- I originally ejected the pen
> drive when Gnome auto-mounted it, but then found I couldn't do anything
> with the device at all, so concluded that contrary to my memory it
> needed to be mounted. Web pages I'd found said nothing about unmounting
> the device before writing, so again I thought my memory was faulty. What
> I failed to consider was the difference between unmounting and ejecting.
>
--
The boys at first were very polite about my medals and asked me what I had done
to get them. I showed them the papers, which were written in very beautiful
language and full of fratellanza and abnegazione, but which really said, with
the adjectives removed, that I had been given the medals because I was
an American. - "Another Country"
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