Edit ArmbianEnv.txt when machine is unable to boot?

[Myriade]

Hello. I recently got a vontar-dq08 working with armbian. I used someone's build for a x88pro, so I replaced the dtb with the one that came on my board. After editing the ArmbianEnv.txt and resetting, it did not boot. Idk if it's a typo on my end or the tree not working, but to make it boot I would just have to change ArmbianEnv.txt, but taking the sdcard out and plugging it in my computer I can't find the file in /boot

How can I revert the ArmbianEnv.txt when my machine doesn't boot?

[Werner]

moved to tvboxes

[CryBaby]

If the file is not in /boot could you have accidentally deleted it? Maybe try recreating it.

 

In general, if you have boot problems you should attach a serial to USB cable and see what uboot is saying.

[Myriade]

The thing is that no file is present under /boot. It's true for some other folders (I can't check rn) but the /home folder is fine. It's not a missing permission problem, `sudo ls /boot` yields the same result. I'll get back at you when I can check but this seemed to be happening on 2 different computer. I just assumed that /boot is meant to be empty and gets populated at boot (and it was just strange design), since I can't see any content in /boot when mounting the sd card externally even when the box boots fine. From inside the box when it boots fine I can access the content of /boot though.

I'll try to get my hands on a serial to usb cable, though this will just help to figure out why it doesn't boot, not why I can't access the content on the sd card externally.