Trying to recover 50.2 GB of data on micro SD card

Hi,

A friend of mine recommended me Recuva in hopes to recover 50.2 GB of data stored on micro SD card on a Samsung/Android device. The scan results were as follows:

ExFAT = 59.6 GB, Cluster Size: 131072, Found 1,532 files (8,499 ignored) in 9 minutes, 56 seconds.

How can I recover the 8,499 files that were ignored. Please advise.

The ignored files are non-deleted, or zsro byte or system files. You can show these by going into Advanced Mode and checking the various boxes in Actions/Options.

I have the same problem. After scanning an external HDD over 3 hours, Recuva found 0 files and 108324 skipped files. Are they all zero bytes or system?