Tested on Lync 2013, Windows 2008 R2, SQL 2008 R2
Cannot install Lync 2013 Front End Server with the following error during setup: Command Execution failed: Cannot find any suitable disks for database files.
If you open setup log with browser you don’t see detailed info except this error.
There was 13 GB free space in C drive. I added 20 GB disk and extend C drive using disk management. Run the setup again, setup successful. It seems at least 20 GB free space is required on C drive.