Solaris 10 10/08 (U6) ZFS Root Installation Tip
If you wish to install the new Solaris 10 10/08 using ZFS for its root file system, you might not see it in GUI installation mode.
That’s why you need to install it using Text/Console mode. Just choose number 4 in the first prompt of the installation process.
In one of wizard step, you are prompted either [...]