I understand, thank you for your reply and for letting me know. I will follow the Readme and Install instructions for the HQ Anniv. Patch. Your help is very much appreciated!Starforce was on disc version of GTR1 and GT Legends but NEVER in gtr2 which was SecuROM. Steam Digital versions are DRM free today.
HQ Anniv. Patch includes both nocd and digital to play without disc in dvd tray : you must choose the version you want via GTR2_SETUP.CMD as you have different plugins options (some plugins work with nocd only but others work with digital only).
There is no problem, you can use either disc or steam gtr2 with HQ Anniv. Patch (it is clearly written in readme)