Merge pull request #74 from microsoft/bw

Fixed issue #67

Author: rgward

README.md

@@ -89,7 +89,7 @@ In order to complete the exercises in this workshop you will need the following:
 - **NOTE for Linux or container users:** You will be able to go through many of the exercises using Linux as your client and SQL Server on Linux or as a container. However, some exercises require ostress.exe which is a Windows only program. You can also connect with a Windows client to SQL Server on Linux or a SQL Linux container.
 - An Azure subscription is required for Module 2. Check the instructions in each exercise for specific permission requirements. Your instructor will indicate whether you will do Module 2 exercises. Exercises 2.2 and 2.3 in this module cannot be completed using an Azure Virtual Machine (or you set your Azure VM with the following process: <https://learn.microsoft.com/azure/azure-arc/servers/plan-evaluate-on-azure-virtual-machine>)
 - **SQL Server 2022 Evaluation Edition or Developer Edition General Availability** from (https://aka.ms/getsqlserver2022) with the Database Engine feature installed. If you use the Developer Edition you must enable the TCP protocol.
-    - Exercises in Module 5 require the PolyBase Query Service for External Data Feature (using all defaults). **IMPORTANT**: If you have an instance from a previous version of SQL Server already on your computer or VM that has the Polybase feature enabled you will have to remove that feature from that instance or uninstall that instance. If this is not possible Module 5 does have T-SQL notebooks for you to view the experience.
+    - Exercises in Module 5 require the PolyBase Query Service for External Data Feature (using all defaults). If you have installed SQL Server from an Azure Virtual Machine marketplace image, you will need to add the Polybase feature after deployment. **IMPORTANT**: If you have an instance from a previous version of SQL Server already on your computer or VM that has the Polybase feature enabled you will have to remove that feature from that instance or uninstall that instance. If this is not possible Module 5 does have T-SQL notebooks for you to view the experience.
     - **You must configure SQL Server for mixed mode authentication. Read more how to do this at https://learn.microsoft.com/sql/relational-databases/security/choose-an-authentication-mode**.
     - Named instances are supported but you may need to make some edits to some scripts in some modules where the exercise have you connect to SQL Server.
 - Install **SQL Server Management Studio (SSMS)** latest 18 or 19 build from https://aka.ms/ssms18 or https://aka.ms/ssms19. Several of the modules require features built only into SSMS. You may have a better experience in some modules with new features of SSMS 19.