Need to partition root

Hello guys,

I am using Solaris 10 x86 OS. While installing OS i have allocated entire 10 GB space to the root. Now i am not able to create new partition it says me "out of range" or "<cylinder number> not expected". Can someone please help me to allocated a default recommended space i.e 8GB or 9GB to root and rest of the space as free space for me.

Thanks & Regards,
Bhargav

You have to reinstall the system with new filesystem layout.

I have re-installed the OS and allocated 9 GB to the root and 2 GB other file system while installing but still i face the same problem.
By using the command format and partition i am getting the same error "out of range".
eg-
cylinder value for root ranges from [2 - 1031 root]
I am trying to create a partition from 1033 it gives me an error message "out of range"

Please suggest