Resetting the root password on a Platform Services Controller (PSC) 6.0 U2 is taken from the following link —
Link to Reset PSC root Password
The above website clearly mentions on how to use the SUSE Linux Rescue CD to create a new root password and update it in the /etc/shadow file on the PSC itself and after reboot you will be able to get into the PSC with the new password.
Hope this helps !!