FH4 doesn't start on my PC anymore after HDD change

Hi community, hi support-team,

I installed and played FH4 on my PC for more than 5 hours without any issue.

For other reasons I had to change my HDD from a 1TB disc to a 4TB disc. Installed both discs, did a 100% partition clone (so every bit got copied), disconnected the old disc and everything worked fine.
Despite Forza 7 and Forza Horizon 4. Both pretend to be “offline” and can not be opened. The storage is not available or disconnected.

Couple of questions:

  1. I’m downloading the game again (69GB at 16MBit/s …) - is that the only chance to get it working again?
  2. Where will the download be stored? Can I save the file for further installation needs?
  3. Where will the game be installed? The “old” installation sits still on drive E: - the new one will land on drive D: … I want to remove the old installation
  4. What happens to my game play? Is all lost? Or stored online?

How great were the times when you downloaded a compressed setup.exe, could copy it whereever you wanted and got it installed whereever you wanted … without downloading the same setup files twice …

Any support / help appreciated!

https://support.forzamotorsport.net