If the Installer doesn’t open automatically, open it manually.
Install Mirra for Windows 2.2 (Lite)
Seagate provides two versions of the Mirra for Windows 2.2 installer. If you are certain that Microsoft .NET 1.1 SP1 is present on your computer, download and run this file.
Follow the Installer directions to complete the installation.
Restart your computer after the installation is complete.