On Tue, Nov 8, 2016 at 12:24 PM, Paul Plankton <[email protected]> wrote:
> Hi,
>
> I again played yround a bit with this. My first try was an operation
>
> sudo cp /dev/random /dev/mmcblk1
>
> From my understanding this should erase the onboard MMC completely together
> with all boot data. Nevertheless when I try to boot from a board erased in
> this way, there is still a u-boot coming up with a bunch of messages.
> Finally it of course fails because it can not find an operating system - but
> where does this boot sequence come from? It can't be on the on-board MMC and
> a SD-card is not inserted!

Or just:

sudo dd if=/dev/zero of=/dev/mmcblk1 bs=1M count=10

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

-- 
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