Hello, I have this old micro SD card that was in my phone for the entire time I used it. Today I put the card in my laptop and realized there was a lot I wanted to copy from it. I removed it from my laptop and inserted it into a card reader for my desktop. It was recognized right away. I went to the folder and started the copying process to a drive on my computer. Everything was copying fine. As it was copying I started looking around the SD card to see if there was anything else and then suddenly it stopped copying. I thought maybe it just need to be removed and reinserted so I tried that. There was an option to “try again” to keep copying a video that was on the micro SD card and that wasn’t working. I tried skipping that and it went to an image and wouldn’t copy that. I tried reinserting it again and this time it said “P:/ is not accessible. incorrect function” I removed the SD and tried it on my laptop and nothing happens at all there now. I brought it back to my PC and it keeps saying “P:/ is not accessible incorrect function”. I tried running command prompt as administrator and doing a CHKDSK and it responds as if nothing is there. I tried a couple different recovery options like “Aiseesoft Data Recovery” which shows the drive but doesn’t work says something about a partition. I tried “Steller Photo Recovery” and it doesn’t show the drive at all. My wife tried disk utility on her mac book and it doesn’t recognize it at all. There’s no physical damage. It just stopped working all of the sudden. I suppose I shouldn’t have tried to use it while it was copying. That must have corrupted something. Is there some other way to get these files? I even tried sticking it in an old phone and it’s as if there’s nothing there.
well, fortunately I don’t need to worry about this. I had an epiphany last night that everything may have been backed up to google photos and IT WAS!!! Way back even before 2014 
So I can just trash this. And for the record, this doesn’t even appear to be a sandisk micro SD. I can’t discern what it is to be honest. I am just most familiar with sandisk and all my other SD cards are. So I felt like this would be a good place to try and figure out what to do… But I’m good now
I do not trust SD cards or the smaller microSD variants as these have a reputation for fakes and are generally error prone at the best of time.
I use a USB card reader and I copy everything to hard disks in a USB-C 5-disk JBOD box which has 40TB of storage.
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What I believe is that your SD card was already fragile and starting to fail. When you accessed it and copied files and browsed it, it triggered one of the last remaining working parts of the card to fail — either the controller (the chip that translates the storage to your computer) or some bad sectors (parts of the memory) finally gave up.
Good news:
- You already copied some files, right? Those are safe.
Bad news:
- The remaining files are now locked behind either a failing controller or damaged memory sectors.
