[SOLVED] Files on new external hard drive become unreadable

[jeffgln]

I recently bought a new external HDD and transfered to it ~2TB of videos from an old one. I then noticed that some (but not all) of the videos could no longer be played on the new HDD (the error I got was 0xc10100bf with Windows 10's built-in video player; didn't work with VLC either). I thought that there must have been a problem during the file transfer and used a tool (hbbatchbeast) to check for corrupt video files on my new HDD. I then replaced all of them (several hundred) with copies from my backup. Another hbbatchbeast run showed that now all videos were apparently fine. I thought that was it.

However, today, I started up my computer and tried to play another video file from the new HDD. It was now also unreadable, throwing the same error message. I ran hbbatchbeast again and it showed >100 unreadable video files, at least some (not sure if all) from previously unaffected folders. This is the SMART data for the HDD (raw values as decimal values):

What do you think is the most plausible explanation for this?

Thanks, -jeff

 

[mdd1963]

Try another USB cable and port (experiment with USB2 and USB3 ports, as some drives' allegedly at USB 3.0 spec had overheating circuitry with massive amounts of reads/writes at USB 3.0 speeds), but, beyond that...at some point, I'd conclude I need to test with a different drive, regardless of what CrystalDiskMark says. Corrupted files are certainly useless....