: Because the drive "lies" about its space, you may believe your files are safe when they have actually been overwritten or not written at all.
from the SD Association to restore a card to its factory-optimal settings. Change File Systems
Move rarely used files to services like Google Drive or OneDrive. How to Restore a "Fake" Drive
When the tool "finishes" its process, it reports a new, larger capacity to the Windows operating system. If a user had an 8GB drive and used the tool to "upgrade" it to 16GB, Windows will display the drive as 16GB. However, the physical storage chips inside the USB remain 8GB.
Copy a large folder (4GB of mixed files) onto the USB. If the SData Tool worked correctly, the folder will fit even though the drive previously only had 2GB of physical room left. The data compresses live.
You don't need third-party software. Right-click your USB drive > Format > Choose . Then, right-click the drive > Properties > General tab > check "Compress this drive to save disk space."