I've tried so many methods to fix my SD card and I've come to the conclusion that it is totally destroyed. There is no file system on it, and I am unable to format it. In command prompt, the status is unusable and the size is 0 bytes. It's a 16 GB microSD card. This happened after I did a factory data reset on my phone. I am unable to mount the card or even format it on the phone.
I tried opening the the disk on the computer, I received the message: "G:\ is not accessible. Incorrect function."
When I try to create a partition on the volume, I get: "DiskPart has encountered an error: The parameter is incorrect. See the System Event Log for more information." Also formatting, I get "0 percent completed," and the same message.
When I try clean, it says: "DiskPart has encountered an error: Incorrect function. See the System Event Log for more information."