I've got mydbr running successfully in inetpub\wwwroot, but ran into a permissions issue on a recent update. The updater checked permissions on all folders in wwwroot not just the mydbr related ones. Hence I received an update error saying:
Please make sure that C:\inetpub\wwwroot is writable to your web server.
Once you have granted write permissions to your web server try again and click refresh.The following files and directories are currently not writable to your web server
C:\inetpub\wwwroot\aspnet_client/
C:\inetpub\wwwroot\aspnet_client/system_web/
C:\inetpub\wwwroot\aspnet_client/system_web/4_0_30319/
The wwwroot folder is writable to mydbr, but the aspnet folder isn't. Technically I don't think mydbr needs access to these folders does it? But it won't let me continue without granting permission to these. Not a big deal to add permission, but thought I'd mention that the scenario happened.