have not tried it from cli but if i remember correctly, interactive upgrade from 5.1SP to 5.5 did not look any different than fresh install of 5.5
Hello,  Is it possible to Install Powerpath with an automated process like Altiris? We would prefer Altiris but any way to automate the install process would be good. This would mean I would have to pass it paramters to answer any questions the normal install process would ask.  Can this be done?   Thanks!!
Unattended Powerpath 5.5 install