Hm, still not working. I have a MLO-file which works smoothly out of a 
FatFS partition but when I try to write it to the MMC directly with 

sudo dd if=./MLO of=/dev/mmcblk1 count=1 seek=1 bs=128k

and/or

sudo dd if=./MLO of=/dev/mmcblk1 count=1 bs=128k

the board does not boot afterwards, console only prints "CCCC". What else 
could be missing?


Am Dienstag, 8. November 2016 19:29:15 UTC+1 schrieb RobertCNelson:
>
> On Tue, Nov 8, 2016 at 12:24 PM, Paul Plankton <[email protected] 
> <javascript:>> 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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