If you’ve worked in an IT department for a mid-to-large company you may have run across Microsoft Volume Licensing.  I think a tome could be written on the intricacies of the subject, but here I’m only going to touch on one.

How to determine your Windows distribution channel

Since PowerShell is king, we’ll start there:

Open a PowerShell as Administrator and type

cscript.exe /nologo $Env:WinDir\System32\SLmgr.vbs /DLI

Or use the abbreviated syntax as shown below in an old fashion elevated Command Prompt

C:\Windows\System32\SLmgr /DLI

As seen above there are RETAIL, KMSCLIENT and MAK channels.  I believe that TechNet and MSDN have their own channels, but I don’t have an example of them.

In addition to SLmgr.vbs, there are other methods to determine the channel

• System Information for Windows (MSInfo32.exe)
• Microsoft Volume Activation Management Tool (VAMT)
• Microsoft Genuine Advantage Diagnostic Tool (MGADiag.exe)
• The Ultimate PID Checker (3rd Party)

Why does this matter?

Mostly this is a licensing and product activation conversation; however, if you are a system builder (use MDT or ConfigMgr to build images) you’ll notice one difference.  non-Volume Licensed ISOs will prompt for a license key during OS Deployment even if SkipProductKey=YES is set in CustomSettings.ini.

ISO Matrix

As I encounter them, I’ll keep a matrix of Windows ISO files and their identifying continue reading on CatapultSystems.com