Steam Registry to make Playnite recognize the Steam installation

 Export these registry keys from your diskless server and merge it to client registry :

[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Valve]
[HKEY_CURRENT_USER\Software\Valve]

New update of Steam requires a service called "Steam Client Service". First copy this folder "C:\Program Files (x86)\Common Files\Steam" to Gamedisk. Then change the service imagepath to the gamedisk e.g., "D:\Master\Steam\steamservice.exe" /RunAsService in this registry key :

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Steam Client Service]