Beware! Samsung SSD T7 corrupts all video files when copied to

I going to back out, as that's going to be best.

But, why are you here? If all you're going to do is reject offers to help, by the use of best practice means, why even bother to do all the typing?

In a former life, a situation such as yours was known a FUD: Fear, Uncertainty and Doubt. It does nobody any good to go through this process. As I said, it's best I now just be quiet.

Here is a suggestion from Apple: Format drives for Final Cut Pro, Motion, and Compressor - Apple Support

Not sure you are using these video applications, but there is no mention of "case-sensitive" here.

Also here: Move your Photos library to save space on your Mac - Apple Support

This one is about the Photos Library but note also that videos are sometimes stored in the Photos Library. Again, Apple does not recommend case-sensitive here either.

I would try all over with the T7 formatted NOT case-sensitive. If it still does not work, then I would replace the cable and reformat and try all over again. If it still does not work, I would deduct that there is a good chance that the external SSD is defective. These come with at least a 3-year warranty.

I also did a very quick online search and could not find much but others have experienced video issues when mixing between case-sensitive and non-case-sensitive files on different disks: Extensions on Files Changed from lower ca… - Apple Community

1. At least two responders said they are not having your issue.
2. We are trying to get to this by asking you questions about formatting and setup, cables, etc.
3. Yes, answer the troubleshooting questions being asked of you.

OK, I have several Samsung T7 SSDs and have zero issues with them. It appears you do not want to troubleshoot by answering some questions. Again, I don't think the issue is the SSD itself as you described. The issue is going to be its formatting, the files, or maybe even connectors. Of course your SSD could be damaged but your posts indicate you feel the issue is the T7 SSD rather than an issue with the SSD or other contributors.

Your have something else going on. We have seven T7s and they all have worked beautifully since setting them up.

To not investigate for a different cause to your problem is inviting disaster. Or at least severe data loss.

There are several troubleshooting questions in the thread such as "Why is the ssd formatted case sensitive? Can you copy other files back and forth?".

Copying files to/from disks formatted case sensitive and not case sensitive is a receipe for corruption and issues with files/data. Failing connectors causes issues. Using third party provided apps to manage the filesystems is another huge issue.

Common sense dictates that exchanging two files, one named "onefile.dat" and "ONEFILE.DAT", between case-sensitive format and case-insensitive format will lead to storage confusion (at best) and file corruption (at worst). Also, "best practice" is to NOT use Samsung compatibility software with Macs ... just use the drive as a drive.

You still have not explained WHY you decided to use "case-sensitive" in the past. And true troubleshooting requires analysis of why you did what when and in what order. To insist that your actions in the past will not indicate problems in the future is nonsense.

We started asking common troubleshooting questions to help determine the cause of the problems, and you simply said "enough of the past, tell me best practices".

Good luck searching for answers without looking at the problem.

solidrocketbooster wrote:

If two are not having an issue does this mean my issue is non existing?

This T7 SSD is one of the more reliable and popular models. On Amazon, there are 18,197 ratings with an average of 4.8 which is about as good as it gets. So it is not just two people not having an issue. I encourage you to explore further using matching drive configurations and have a relook at your cables and connectors. You can also test the SSD with DriveDX (hardware) and Disk Utility (file system).

By the way, I have seen pristine and new cables that look fine work intermittently or not at all. They are inexpensive parts, mass-produced, and some small percentage of them just don't work. It's an easy thing to check by using a different cable.

[P.S. I did not see any answer to the question about using third party (e.g. Samsung) drive utility or firmware with the device, but if in use, those tools have been known to conflict with the MacOS as both are trying to manage the drive at the same time. Are such tools/firmware in use? If not, then my comments above still apply.]