iMX6 second boot: from SDCard [SOLVED]

gianluca gianlucarenzi at
Tue Mar 1 03:38:57 PST 2016

On 03/01/2016 12:18 PM, gianluca wrote:
> Hello everybody,
> first of all, I would say a BIG thank to everybody point me out on have
> a USB-Serial Downloader working and Barebox up and running in my custom
> iMX6Q based board.
> Right now I wish to know what can be done or not done to fireup the
> board from attached microSD card which is working because Barebox (from
> USB Downloader) is seeing it and find any partition scheme found on it.
> If I simply write the barebox-flash-image (currently a symlink to
> image/barebox-[BOARD].img file) to a sdcard with command:
> [my usb-adapter is seeing the sdcard as /dev/sdk]
> dd if=barebox-flash-image of=/dev/sdk
> it works, but actually I have lost all MBR partition scheme at all.
> I read somewhere ( that
> writing the .imx file with an offset of 1K from the beginning of the
> card it should run.
> Actually it is not. :-(

I can answer to this by myself ;-)

The issue is to write skipping the fisrt 1024 of the sdcard (bs=512 
skip=2 and skipping the first 1k from the image itself [seek=2])

dd if=barebox-flash-image of=/dev/sdk bs=512 seek=2 skip=2

works fine.

Sorry for noise.

Eurek s.r.l.                          |
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