Submitted by SteveWin1 on Sun, 2019-03-31 16:24
Somebody asked about this a few months ago and I didn't bother actually getting involved in finding the answer, but I recently spent a weekend at a hotel in Orlando and allowed valet to take my car for the first (and LAST) time and it came back with really bad curb rash and a chunk of the sidewall of the tire missing. They said they'd do an investigation by looking at their cameras and get back to me.
Unfortunately, I didn't notice the damage until I got home (an hour and a half drive), so the dashcam had overwritten everything. I figured there was a pretty good chance that the SD card might still have some remnants of the old videos, so I did a quick google and found a utility called "PhotoRec" that's made for linux that pulls old videos and pictures from SD cars and thumbdrives. It been running on my system for about 45 minutes so far and its found 1943 deleted videos and shows very clearly that they parked my car next to a blue curb and there is blue paint scratched into my rims, so its already really helped my case and I'm hoping I'll be able to get the video of when the damage actually took place once its finished and I've had time to go through all those videos.
There are probably other utilities that can do the same thing if you normally use Windows or whatever Apple is calling their OS these days. You could also just create a bootable USB drive or DVD with linux mint on it (works very much like Windows) and recover your files and then boot back into your usual OS after you've finished.