I Can't write to disk. All things are reset after reboot.

[nemonein]

Hi.

I'm using Cubietruck, and installed Ubuntu server(mainline) on it.

 

Suddenly, I can't write to disk(SD card). Actually, yes I can. I could create, edit, or even delete files, but all the changes are gone after the Cubietruck is rebooted.

The deleted files are back, and created files are gone.

 

What should I check?

My SD card is Samsung Evo 16GB, and I'm running Cubietruck for more than 2 years. I have never encountered this weird situation.

[Igor]

SD cards die and their dead usually manifest this way. Sooner or later. I have a bunch of dead ones around and they are not even 2 years old. 

http://amzn.to/2fDJVlw

[nemonein]

Thanks.

I tested the card with a PC, and I think you're right. It's dead.