Okay buddy, It appears dual boot is what you prefer.

First, CDE is Common Desktop Environment (i.e) In simple words, a GUI which allows you to login with your username and password.

BigAdmin Feature Article: Multi-Booting the Solaris 10 OS, Linux, and Microsoft Windows on a Laptop

and

Multi-booting Solaris and other operating systems

Would help you on this I believe. Also, it deals with windows, Linux and solaris on same system. Ignore whichever is not required for you.

Let us know if you find any questions!

All the best,

-DB