SOLVED: System doesnt boot after build - kernel panic

Building Zynthian
1

I just got my zynthian v5 today, got the latest image, put it on sdcard after checking md5sum, but at boot, I only see a console, the wrong way around from what seems to be the normal perspactive to look at the device, saying kernel panic after quite a bit of error output.

From the messages I dont get an idea on what could be wrong.

Is it a hardware / assembly problem? Or something with the software?

What can I do to analyze/fix it?

zynthian kernel panic
zynthian kernel panic1920Ă—1440 287 KB

thanks,
Henning

2

It’s some sort of filesystem issue, maybe try with a different SDCard? or reflash it or something?

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3

Thanks a lot!
I tried another SD card and that worked.
For debugging reasons - and to understand if the issue was caused by a generally broken card or maybe the size - I recreated the first card again, too, and checked, and that worked, too.

So i must have had some strange problem with the image, but in the end the bot cards, a 32 and a 64G worked fine.

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4

Sometimes the image flashing process hasn’t flushed all the data to the disk even thought it might look like it has done.

5

I always do a manual sync after flashing an image.

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6

I also do it always :wink: Simply write “sync” in your root terminal.

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7

Or, sudo sync if you need elevated right to write to the SD card.

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8

I added to the wiki :wink:

https://wiki.zynthian.org/index.php/Zynthian_Software#Preparing_the_SD-card

Thanks!

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