Flashed rom changes aren't persistent

zdringy · January 30, 2020, 3:27pm

I've flashed a dump for my router(wr841nd v8) thanks to @juppin you can see the full thread here(9 replies, very short) [SOLVED] Wr841nd debricking

Now, it looks like my changes aren't surviving a reboot, here's what I did to eliminate all variables

rebooted the router
$echo abracadabra > /etc/config/test
$cat /etc/config/test <- shows abracadabra
$reboot
$cat /etc/config/test <- no such file or directory

any ideas as to why this happens and/or how I can fix it?

Thanks for your time!

ulmwind · January 30, 2020, 3:29pm

4M flash, it is standard behavior.

zdringy · January 30, 2020, 3:30pm

can you please expand?

ulmwind · January 30, 2020, 3:30pm

Your router has only 4M flash, and it is not recommended for using OpenWRT.

zdringy · January 30, 2020, 3:32pm

this router ran chaos calmer for a few years before I bricked it... the dump I received comes from a running router with "lede reboot", I'd say it can run at least some versions of openwrt

ulmwind · January 30, 2020, 3:33pm

https://openwrt.org/supported_devices/432_warning

zdringy · January 30, 2020, 3:39pm

read it, I'd be happy if I could get the router to run as a repeater tho right now it can't save even a few bytes...

df shows this as output, for what it's worth

Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/root                 2304      2304         0 100% /rom
tmpfs                    14088        56     14032   0% /tmp
/dev/mtdblock3             320       260        60  81% /overlay
overlayfs:/overlay         320       260        60  81% /
tmpfs                      512         0       512   0% /dev

ulmwind · January 30, 2020, 3:41pm

I recommend you to build image with settings already specified.

zdringy · January 30, 2020, 3:47pm

thanks!

I tried flashing a chaos calmer image, when running bootm, it still boots from lede, looks like even if I build a custom image, it won't be used somehow...