Download Disk Drill, CleverFiles' Mac file recovery software. Drag and drop it to your Applications folder to install, and from your Applications folder to the Dock for easy access. Disk Drill will require your administrator password on the first launch. That's all the preparation you need.
Activate two unique features of Disk Drill to ensure your files safety – Recovery Vault and Guaranteed Recovery. First one will direct Disk Drill where to look for the lost files, whereas the second option will keep an eye on files moved to Trash and save invisible copies of them for whenever you start Mac file recovery.
Disk Drill offers Deep Scan – the method that digs through whatever remained of the files to find pieces that are still recoverable and put them together. It doesn't matter if the system is NTFS, HFS or FAT32, Disk Drill will apply its great knowledge of file signatures to find the correct ones and recover files including XLS, DOC, AVI, MP4, JPG, and others.