Software selection choices include a 64-bit support option when installing the Solaris 7 release for all system types:
On UltraSPARC systems, 64-bit support is selected by default. You can override this default by deselecting the 64-bit support.
For all other systems, 32-bit support is selected by default. You can override this default by selecting 64-bit support, available in the Developer and Entire Distribution software clusters, which will provide the 64-bit Solaris libraries for developers who wish to develop 64-bit applications on 32-bit systems.
Look for the 64-bit support option during the various Solaris 7 installation scenarios:
For an initial installation using the Solaris interactive installation program, the 64-bit support option is displayed on the Software Selection screen, which prompts for the type of system software to be installed: End User, Developer, or Entire Distribution.
For an upgrade using the Solaris interactive installation program, the 64-bit support option is displayed on the Customize Software screen that appears prior to the start of the software upgrade.
For an initial installation using Solaris Web Start, the 64-bit support option is displayed on the Configure Solaris screen, which is found after pressing the Custom Install button.
For an initial installation or upgrade using the custom JumpStartTM technology, 32-bit or 64-bit support can be selected using the profile. Add one of the following keyword value pairs to the profile:
isa_bits 32
isa_bits 64