Hello Scotto,
Automatic uninstall through .dmg file is supposed to delete Parallels files the same way you can delete them manually ("clean uninstall"). When upgrading please use your .dmg file.
So uninstall option is automated. A "full uninstall" with sudo rm commands is only proposed in case of troubleshooting when a usual uninstall does not remove some files for some reasons.
Best regards,
Xenos
Last edited: Feb 15, 2008