Terms of Sale:

• You may install and/or run the software on only one computer at a time but you may install and/or run the software on any computer owned by you. To install and/or run the software on more than one computer at a time, you will need a separately purchased copy of the software for each of those computers.
• You must accept the terms of the Alsoft License Agreement.
• All sales are final.

If You Are Purchasing a DiskWarrior Upgrade
The upgrade is not available for download. All orders will be shipped a DiskWarrior DVD via US Mail. Please allow one to two weeks for delivery of your DVD.

To install, DiskWarrior 4 requires that your Mac start up in Mac OS X 10.3.9 through 10.7.x. This is a change from version 3 of DiskWarrior which supported older versions of Mac OS X.

DiskWarrior 4 version 4.4 is available, by request, on CD for old Macs that do not have DVD drives. However, these CDs cannot start up any currently shipping Macs models and can only be obtained by first contacting our Technical Support Department.

Note: DiskWarrior DVD revision 1109 is now shipping with DiskWarrior 4 version 4.4. All Intel and PPC Mac models meeting the system requirements for DiskWarrior can be started from the DiskWarrior DVD. Some newer iMacs with wireless keyboards have timing issues when starting up from any DVD. Instead of pressing the "C" key immediately upon start up, wait for the startup chime and then press the "Option" key. This will bring up the Startup Manager which will allow you to choose the DVD as a startup disk. If your wireless mouse is not working in the Startup Manager, use the arrow keys to choose the DVD, then press the "Return" key to continue starting up. Click here to learn how to repair the directory of a disk in a Mac model that cannot be started from the DiskWarrior DVD.