Thanks to Michal Pryc for this information.
How to Disable the Splash Screen to Debug Boot Problems in OpenSolaris 2008.11
If you are running an OpenSolaris release prior to OpenSolaris 2009.06, you need to use this procedure to disable the splashscreen during the boot process. (Starting with OpenSolaris 2009.06, you can disable the splashscreen as a boot option.)
If you experience boot problems where the system stalls at the splash screen, you should disable the splash screen so you can debug what might be going on under the covers. This involves editing the GRUB boot loader.
- Start OpenSolaris. When the grub chooser is up and use up/down keys to highlight the
entry which you want to boot in:
- Press "e" to edit.
- Remove all the lines that describe the splashimage. To do this, select the line that splashimage lines and press the d key to delete. For example:
splashimage /boot/solaris.xpm foreground d25f00 background 115d93
- Select the line with "kernel$ /platform/......"
- Edit this line by pressing "e" key.
- From the "kernel$ /platform/......" part, remove the line that says ",console=graphics".
- Press Enter.
- Press the "b" key to boot.

