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By default, the system is configured to boot automatically from the microSD card when powered up.
===Binary images on SD card===
XELK SD card contains all binary images required for booting the system completely from kernel/dtb to root file system on <code>ext3</code> SD partition.
Once you got new binay compiled from your modified sosurce, they have to be installed on first SD partition preserving the original file names usde into <code>boot.scr</code> u-boot bootscript.
The '''boot.scr''' is the binary version of the txt file which can be built using the <code>mkimage</code>
<pre>
echo 'bootscript generated with command "mkimage -A ARM -T script -C none -n XELK -d bootscript.txt boot.scr"'
setenv fdtfile imx6q-xelk-l.dtb
setenv bootfile uImage
setenv mmc_loadk 'fatload mmc ${mmcdev}:1 ${loadaddr} ${bootfile}'
setenv mmc_loadfdt 'fatload mmc ${mmcdev}:1 ${fdtaddr} ${fdtfile}'
echo Booting AxelLite-XELK via mmcboot
run mmcboot
echo mmcboot FAILURE
</pre>
and compile it using:
<pre>
mkimage -A ARM -T script -C none -n XELK -d bootscript.txt boot.scr
</pre>
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