I’ll keep it simple: You cannot use Photoshop CS6 to create your Custom Printer Profile - the “why” is too complicated to get into, but the “No Color Management” option no longer exists (CS4 and earlier), and there is not a “workaround” such as that used in CS5.
So you have two choices:
1) The Best Choice: Use an older version of Photoshop to create your Profile – Yes, you can install more than one version of Photoshop on your computer; you just can’t open them at the same time.
2) The Not-So-Good Choice: Use the Adobe Color Print Utility. This is incredibly “buggy” software, and rarely works properly – use it as a last resort if you have a Mac, and not at all if you have a PC. Adobe ACPU Download
Once your profile is CREATED properly using another program,
it can USED in any program that incorporates Color Management,
including Photoshop CS6.
By the way, if you need Custom Printer Profiles, that’s a service that I provide: Click here