Should this situation ever occur, the lost+found directory would be full of seemingly random files that would be difficult to parse through. Fortunately it’s unlikely to happen on most well kept systems, but there’s always the possibility for a faulty connector or a power outage to cause something like this. Therefore it’s useful to know the best way to go about recovering from this class of incident. Some users have also used these techniques when recovering information from rooted smartphones, which have a tendency to attract clusters in the /lost+found directory. Be extremely careful when working with any sort of unofficially supported device. You could cause damage to the file system in this manner. You’re urged to always make proper backup copies of anything you can’t afford to loose to protect you should this kind of problem ever rear its ugly head.
Method 1: Mounting a Damaged Partition
If you’re able to mount the partition in question, then move immediately to Method 2. Assuming you’re unable to mount the partition in question, then type the following command at a root CLI: Replace /dev/PARTITION with whatever the device partition is. Be extremely careful to use the correct one. While fsck usually won’t allow you to run on a mounted partition, it can still be a destructive command if applied incorrectly. Give it some time to run, as it might take a while. The output will more than likely be quite verbose.
Method 2: Recover /lost+found Fragments
If you were always able to mount the partition or if running fsck now permitted you to do so, then you’re able to get a list of all the file types in question from the same root super user CLI. Type: Push return and then you can type more typesOfFiles to examine the output. If you’d like to sort it for unique entries, then type the following followed by return You can then use more or less to examine uniqueTypes. One might hope that the output won’t be too verbose. There are some scripts that can be used to recover files once you know what’s in /lost+found, but you can also just type: You can of course move the files to another healthy partition for examination. ls
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