System Requirements

Memory 

The minimum requirement is 512 Mbytes. 

Disk Space 

Recommended size is at least 9 Gbytes. A minimum of 3.2 Gbytes is required. 

Multiboot Capability 

If you are installing the OpenSolaris software on a system that will have more than one operating system installed, use the fdisk command or a third-party partitioning tool to create a new partition or to make adjustments to pre-existing partitions. See:

http://dlc.sun.com/osol/docs/content/dev/getstart/partition.html

For more information about preparing a multiboot environment for specific operating systems, see:  

http://dlc.sun.com/osol/docs/content/dev/getstart/prepmulti.html