Disk Drill Basic is completely free and will allow you to scan your Sony Memory Stick that you want to recover deleted files on and find out if your files are there. Download free Disk Drill Basic for Mac from this website. Double-click on the downloaded files and follow the installation instructions.
Don't hesitate to activate Disk Drill’s data protection features: Recovery Vault and Guaranteed Recovery. These memory stick recover data features will help minimize the chance of data loss.
Disk Drill can scan any hard drive, whether it is FAT, NTFS, etc. It will be looking at all data as a series of bits applying its profound knowledge of file signatures. Once signatures are found it is easy to perform memory stick recover data operations to restore files like .jpg, .doc or .xls, etc.