booting problem from emmc

Started by fec77, September 08, 2021, 02:30:48 PM

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could you help me?
A64, Ind, 2G board sometimes (in the magnitude of 1 from 5) doesn't successfully boot up from eMMC, after the reboot command in linux. Please find the image lof bootup messages linked.
Thank you in advance:

Screenshot available at


What image are you using? Is it one of the images available here:
Technical support and documentation manager at Olimex


Board was ordered last week with SD card containing the image.
dmesg writes:

    0.000000] microcode: microcode updated early to revision 0xea, date = 2021-01-05
[    0.000000] Linux version 5.4.0-81-generic (buildd@lgw01-amd64-052) (gcc version 9.3.0 (Ubuntu 9.3.0-17ubuntu1~20.04)) #91-Ubuntu SMP Thu Jul 15 19:09:17 UTC 2021 (Ubuntu 5.4.0-81.91-generic 5.4.128)
[    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-5.4.0-81-generic root=UUID=5edd21ec-6529-47cf-9105-c70e77e7b131 ro


It seems a little outdated (latest release is from August 21st):

Linux a20-olinuxino 5.10.60-olimex #123632 SMP Sat Aug 21 12:38:05 UTC 2021 armv7l armv7l armv7l GNU/Linux
Try to first update the image with:

sudo apt update
and then

sudo apt dist-upgade
This requires Internet connection.

Alternatively, download the whole archive with the image from the link from my previous post.

Also did you transfer the Linux to the eMMC with the following script:

Let me know if the behavior remains. I will do some tests here too.
Technical support and documentation manager at Olimex


thanks, it solved the problem. At least on our premises we couldn't reproduce it, but - one time - it was experienced, when we weren't complete control of the situation.