Hey Y’all,
FYI: I’m posting here because this applies to all versions of Windows or at least 10 & 11 as I don’t have any earlier versions to test.
I was rummaging around in some old Image files and was curious as to which Windows version was active at the time the image was taken. I found out that you can glean that information in the DISM.log file located at d:\Windows\Logs.
That file however is really big so I wrote a short PowerShell program to sift the file for the information. You just provide a drive letter of the mounted image and the program will do the heavy lifting. Note: this will also work on your C: drive if you like.
Clear-Host
$DrvLtr = Read-Host -Prompt "Enter Windows System Drive Letter"
If ($DRvLtr.Length -eq 1) {
$DRvLtr = "$($DRvLtr):"
}
If ($DrvLtr.Length -ne 2) {
"$DrvLtr is an invalid specification use x or x: only."
Exit
}
$DISMLogPath = "$DrvLtr\Windows\Logs\DISM"
$DISMFile = Join-path -Path $DISMLogPath -ChildPath "dism.log"
$Log = Get-Content -Path $DISMFile
$API = $Log | Select-String "API Version"
$Last = $API[-1]
$Last = $Last -split(":")
$Vers = (($Last[4] -split("-"))[0])
#---- OUTPUT ----
CLear-Host
$Vers = $Vers -replace("API Version","Windows Build:")
"The Windows version mounted at $DrvLtr is:`n $Vers"
Output:
The Windows version mounted at D: is: Windows Build: 10.0.22621.1 PS>
Note: I tested this on both Macrium Reflect and Terabyte Image for Windows Images. Of course it shouldn’t make a different but it’s always good to check!
I’ll probably pretty this up with dialog and message boxes and post it to my shared OneDrive folder at a later date. Let me know if you find it useful.
