My Pi 2 has quit saving files after a power reset.

Question

I can create files and programs, but when I power cycle the Pi, all the new content is gone. I have tried to edit an existing file. The changes were gone after the power cycle. File manager shows 2.4G free. Any thought?

wadeelmore · Answer

I pulled the micro SD card and put it in my W10 computer. I tried to create a file on the card. I received no errors, however the file was not created. I tried to format the card/ W10, but received an error. I tried to delete all files. Looked like it worked. I removed and reinserted the card. All files were back. Conclusion; micro SD card failure. I replaced the micro SD card. Installed Raspbian-Pixel. Normal operation. Issue resolved.

johnbeetem · Answer

GNU/Linux first writes files to RAM buffers and later writes them to non-volatile storage like an SD card or Flash drive. If you hard reset or power down before the files are written to non-volatile storage, you'll lose the changes. Use the "sync" command write changes to non-volatile storage immediately. Enter "man sync" in a terminal window for more information. Use the "shutdown" command before turning off power. If you're using a GUI, there should be a power down command somewhere to shut down safely.