Please try this if you have a UDMA7 compatible USB 3.0 reader:
How to check if the card is corrupted in Windows/Mac:
Download SD Formatter for Windows/Mac: (SDformatter works for all CF/SD/MicroSD cards)
https://www.sdcard.org/downloads/formatter_4/
If the software reports that the card is less than 64MB (not GB) then the card is corrupted and is unrecoverable using card reader.
If the software reports that the card is more than 64MB (not GB) then the card is recoverable using card reader.
Please format it but click option >> format size option = on. The others you can leave at default.
Tech Support
Komputerbay
How to check if the card is corrupted in Windows/Mac:
Download SD Formatter for Windows/Mac: (SDformatter works for all CF/SD/MicroSD cards)
https://www.sdcard.org/downloads/formatter_4/
If the software reports that the card is less than 64MB (not GB) then the card is corrupted and is unrecoverable using card reader.
If the software reports that the card is more than 64MB (not GB) then the card is recoverable using card reader.
Please format it but click option >> format size option = on. The others you can leave at default.
Tech Support
Komputerbay