Remove all other hard disk partitions, only left your drive c:\, use Solaris Install CD to do FDISK for solaris partition, it's should be OK. for more details, welcome to my WEB site
http://communities.msn.ca/johnleyweb, under documation folder, you can get necessary docs.
By the way, I cann't get correct driver to support my VGA card under Solaris either, so the screen is only 16 colours, anybody has the solution, kindly please let me know, my e-mail:
talk2you2002@hotmail.com