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[SOLVED] Help debugging an issue with Raspberry Pi 4B boot (self.selfhosted)

submitted 1 year ago* (last edited 1 year ago) by justpassingby to c/[email protected]

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Hi all,

I am having a strange new issue with the one of the raspberry pi 4b I have running at home. One of them failed/restarted for some reasons and it is now stuck at boot with the line:

Waiting for root device LABEL=writable...

I am booting this PI from USB. From what I can see the disk is ok. I can mount it on my laptop and access it correctly. The partition is labelled correctly. I tried to move it to another PI I have and I have the same error (I did this to remove the possibility it was the PI/USB port). I am pretty sure it is not the power that is the issue (since I am giving it more than enough).

All of this was working correctly until now (for months). Ubuntu may have updated something (my fault, I may not have disabled the auto-update) or something else could have broken.

I can try to point to the partition via UUID instead of the label, but something tells me that is not the issue. Did anybody encounter such an issue in the past or has any advice on how to debug it?

Thank you for your help and time.

===

Solution: https://sh.itjust.works/comment/1646333

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[–] Anafroj 2 points 1 year ago* (last edited 1 year ago)

Ahah, so that's what initrd are called on Pi. :P Good catch!

Funny enough, I don't have such file on mine, the only *.img I have is the kernel, kernel8.img. I guess it's OS specific.

The .bak things sound like an interrupted update, or something. Like if the updater moved the current initrd as a backup file, then started building the new initrd and crashed or was rebooted before completion. That's what I really dislike about automatic updates, I prefer to be sure to know it's running, and see the output. :)

Congrats on sorting it out!