I need to upgrade an existing Hyper V Virtual machine's OS to enterprise from its current 2008 R2 standard, I plan on using the same license key as the enterprise OS that it is running on, I get to be able to do this 4 times with Enterprise i understand, however I am unfamiliar with the DISM command line utility and have never used it on a server before, Are there any risks that I should be aware of or precautions that I should take? it seems simple enough and I have seen it work often on windows 7 with ease, however this VM is also running SQL server on it and I need to make sure nothing breaks in that. Has anyone done this with an active SQL server and has tips for me? soon I will also be needing to do this to another server however this one will be the Base OS running the Hyper-v role, I am looking into any issues that might arise there as wellijerry

Hi, If you upgrade the Hyper-V virtual machine OS from 2008 R2 standard to enterprise, the DISM command line utility will not be affected. DISM commnad line tool is included in WAIK. If you have anything unclear about the usage of DISM command line tool, you could run the following command in command prompt with evaluated rights: DISM /? At the same time, backup anything before moving forward will be a good choice. From your description, it seems that the SQL server is running on this VM. I think towards the SQL server issue you'd better involve SQL forum to get a better response: Title: SQL Server Category URL: http://social.msdn.microsoft.com/Forums/en/category/sqlserver Regards, JamesJames Xiong TechNet Community Support

Hi, If you upgrade the Hyper-V virtual machine OS from 2008 R2 standard to enterprise, the DISM command line utility will not be affected. DISM commnad line tool is included in WAIK. If you have anything unclear about the usage of DISM command line tool, you could run the following command in command prompt with evaluated rights: DISM /? At the same time, backup anything before moving forward will be a good choice. From your description, it seems that the SQL server is running on this VM. I think towards the SQL server issue you'd better involve SQL forum to get a better response: Title: SQL Server Category URL: http://social.msdn.microsoft.com/Forums/en/category/sqlserver Regards, JamesJames Xiong TechNet Community Support

Alright, I will ask the question over in the SQL section, thank you.ijerry