PROCEDURE TO FLASH eMMC

[lobo]

So for the case we may give the command

Code:

$ sudo dd if=TinkerBoard-Lubuntu18.04LTS_ELAR-Systems-SD-v2.img of=/dev/sdc bs=512 seek=212992 skip=139264

seek means where to start reading and skip where to start writing.

Hi Im4Tinker,
let me say that your posts are always very informative and I like.
But here maybe there is a typo, as from the man page for dd:

Code:

seek=N skip N obs-sized blocks at start of output
skip=N skip N ibs-sized blocks at start of input

As I also learned the hard way to find the correct values for reading and writing the boot.img from Android sdcard.
So, I think it must be vice versa, to not produce garbage:

Code:

$ sudo dd if=TinkerBoard-Lubuntu18.04LTS_ELAR-Systems-SD-v2.img of=/dev/sdc bs=512 skip=212992 seek=139264

I ried it with a sdcard, first flashed tinker-board-linaro-stretch to it and then the command as above. I rebooted and saw some errors, but ELAR booted. I saw that there was no network at all and no modules loaded. Then I flashed also the boot partition:

Code:

sudo dd if=TinkerBoard-Lubuntu18.04LTS_ELAR-Systems-SD-v2.img of=/dev/sdg bs=512 skip=8192 seek=8192 count=131072

As one can see, only the 64M as this is the size of the boot partition on the sdcard and to not overwrite the second partition.
The ELAR booted and made some rootfs resize and rebooted.
After that there is also network.
   
Sadly, I have no TB S model to check if it can be flashed this way also to the emmc.