Well, I was using my machine as usual, downloading some stuff in Nicotine while all of a sudden it starts throwing me permission error for the files I was downloading, it was weird so I went to my downloads folder and noticed that the folder where it was being downloaded on was protected, I tried to change it using right click, properties, and after I presses F5 all my system appeared as read only. I noticed that another folder also got read only while I was downloading it from Nicotine yesterday, I don’t know if it is related.
I’m using Ubuntu 18.04.4 LTS.
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I believe btrfs is more sensitive to disk damage than say ext4. That would be safer to use as it makes the drive read-only before ext4 would, giving you more time to prepare for a backup/restore. What filesystem are you using? Give us you dmesg regarding the FS type, that should be a good start.
