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 10.6.x. This is a change from version 3 of DiskWarrior which supported older versions of Mac OS X.

DiskWarrior 4 version 4.2 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 1001 is now shipping with DiskWarrior 4 version 4.2. All Intel and PPC Mac models meeting the system requirements for DiskWarrior can be started from the DiskWarrior DVD. The current DiskWarrior DVD cannot start up the new iMac Quad-Core (introduced October 20, 2009), the new MacBook Pros (introduced April 13, 2010) or the new Mac Mini models (introduced June 15, 2010). An updated disc that will also start up these recent Mac models will be released as soon as Apple, Inc. releases new startup files to Alsoft, Inc. and other developers. Click here to learn how to repair the directory of a disk in a Mac model that cannot be started from the DiskWarrior DVD.