Folder Lock protects files in Windows, DOS, and Safe modes, even when you change your OS or boot from a disk. Folder Lock is fully portable, so you can protect your files on USB flash drives, disks, CD-RWs, notebooks, and hard disks, and it doesn't require installation on another PC. You can lock, scramble, or encrypt depending on speed and security. Locked files are undeletable, unrenamable, unmovable, hidden, and inaccessible. Folder Lock is fast file-security software that can password-protect, lock, hide, and encrypt any number of files, folders, drives, pictures, and documents in seconds.