My friend lent his USB HDD to his dad to help with their home security camera system, as the usual drive had failed. However, the security system didn't recognize his drive as a valid device, so he moved on. When he checked the drive later, he found that it appeared completely empty without any explanation. I'm usually pretty tech-savvy, but I'd like to get some advice on what might have happened before I tell him anything. If I need to ask for more details, I can do that too.
2 Answers
It sounds like the security camera system may have wiped the drive. Cameras often loop saved files and they tend to delete anything that isn’t formatted to their system. So, it’s not surprising that your friend's data is missing without warning.
Yeah, it's a common issue with these systems. They usually don't handle drives that aren't pre-formatted for them very well. If he wants to try recovering the lost data, he could look into recovery software like Easeus or Recuva, but keep in mind those can be hit or miss, especially with large files.

That's a bummer! So, there's probably no way for him to recover that data? He was working on about 300 gigs of YouTube footage.