DiskWarrior is the safest, the most technologically advanced, and themost powerful utility to eliminate directory damage available for anycomputer. DiskWarrior uses a different approach to disk directory repairthan other programs. DiskWarrior is not a disk repair program in theconventional sense. Instead of patching the original directory, it usesa patent-pending technology to quickly build a new replacement directoryusing data recovered from the original directory, thereby recoveringfiles and folders that you thought were lost and that no other programcould recover. This update uses your original 4.0 CD to create a new startup CDcontaining DiskWarrior 4 version 4.1, which adds Leopard compatibility.The new CD will only start up the same Mac models as the original CD.The included Read Me lists details and requirements.