Corrupt files in microSD - How to know if files are damaged?

I have a Samsung Galaxy Ace 2 with a 4GB Kingston microSD. This microSD has only a few files *(that I can remember) - visible both in PC and in file manager (default app) in the smartphone*: - Yu-Gi-Oh! Tag Force 5.iso *(1.6 GB - for PPSSPP Emulator)*. - Yu-Gi-Oh! Tag Force 5.cso *(1.5 GB - for PPSSPP Emulator)*. - Folder "DIR" - 0 files in it. - Folder "Music" - 73 .mp3 files. - Yu-Gi-Oh! Forbidden Memories.iso *(495 mb - for ePSXe Emulator)*. **Background** In previous ocassions, the PPSSPP emulator didn't read the .ISO file *(and I though it was the .ISO file)*, so, I compress the .ISO file in a .CSO file *which I read in formus that is recongized by the PPSSPP emulator*, however, the .CSO file was also not recognized and the app freezes. Trying discarging both files, I used the emulator in my PC and all works well, so, I decided to move all my Music "73 .mp3 files" to the "microSD". After the music files where there, I use the default music player, but most of the files *(when trying to play "random")* says: **not supported** and skips until it finds a .mp3 file "apparentely" not corrupted or ends playing abruptly. Even some .mp3 files plays for a few minutes, ends abruptly and search other random .mp3 file. **What have I tried?** - Scan for viruses the microSD. - Download from other sites the ISO files. - Format the microSD "via the available option in the Samsung Galaxy and vía PC (right click > Format device)". - Following this answer I downloaded (SD Card Formatter 5.0.1), but the formatting process failed for both format options *(quick and overwrite)*. For me, it this weird how this microSD can corrupt files *(most of them)* and not others. Also, my goal is use the microSD for storage games that I can use with the PPSSPP emulator "mostly, Yu-Gi-Oh! games". I'll replace my microSD, but, before to do that, I want to know: - Is there a way to activate a log file in Android for check wheter are files corrupted or missing? - What resources or what else can I do for save the 4GB microSD for use as I intend to do?