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?

moved to tvboxes

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.

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.

If there is nothing in /boot at all then its content is probably in another partition which gets mounted while booting. You will need to find that partition and mount it in your PC to modify it. 

Found the other partition! Quite surprised that it didn't show up in KDE, but that's on me for blindly trusting a GUI. Thank you