You have two computers named Computer1 and Computer2 that run Windows 10. Computer2 has Remote Desktop enabled. From Computer1, you connect to Computer2 by using Remote Desktop Connection. You need to

Configuring Remote Desktop settings on Computer2 (the host) primarily controls server-side behaviors like user permissions or port, not which local client resources are redirected.

Allowing Remote Desktop through the firewall on Computer1 is irrelevant for accessing its local drives from within a session on Computer2; it would only allow other computers to connect to Computer1 via RDP.

Allowing File and Printer Sharing on Computer2's firewall enables network shares from Computer2, but it does not enable the redirection of local drives from Computer1 to Computer2 during an RDP session.

The Remote Desktop Connection client on Computer1 includes settings under the "Local Resources" tab that allow you to redirect local drives, printers, and other devices to the remote session. By selecting the desired local drives in these settings, they will appear as available drives within the RDP session on Computer2.