A PSP game couldn't be found on the disc

[LunaMoo]

As long as you plug the device in pc with windows to make the SD card available as external drive it should, but such software will remove all data from sd card. It basically makes a test by writing chunks of data to sd card and veryfing whenever it copied correctly or not, it can't test what you already have there;p.

The fact that different emulators can't read files copied to that SD card is already good enough test telling you that files you have there are corrupted or empty. Such testing software will only help by telling you how much of that sd card is real in case you are in situation where you can return it and get your money back or just want to see if it's worth using real portion of it, or it's too small for your needs.