Get-RegCurrentVersion

Get-Help -Full

PS C:\> Get-Help -Full Get-RegCurrentVersion
NAME
Get-RegCurrentVersion
SYNOPSIS
Returns the Registry Key values from HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion
SYNTAX
Get-RegCurrentVersion [[-Path] <String>] [[-Property] <String>] [<CommonParameters>]
DESCRIPTION
Returns the Registry Key values from HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion for Online and Offline Windows Images
PARAMETERS
-Path <String>
Specifies the full path to the root directory of the offline Windows image that you will service.
Required? false
Position? 1
Default value
Accept pipeline input? true (ByPropertyName)
Accept wildcard characters? false
-Property <String>
Required? false
Position? 2
Default value
Accept pipeline input? false
Accept wildcard characters? false
<CommonParameters>
This cmdlet supports the common parameters: Verbose, Debug,
ErrorAction, ErrorVariable, WarningAction, WarningVariable,
OutBuffer, PipelineVariable, and OutVariable. For more information, see
about_CommonParameters (https:/go.microsoft.com/fwlink/?LinkID=113216).
INPUTS
OUTPUTS
NOTES
19.11.20 Added Pipeline Support
19.11.9 David Segura @SeguraOSD Initial Release
RELATED LINKS
https://osd.osdeploy.com/module/functions/get-regcurrentversion

Usage

Without any parameters, this function will simply return the CurrentVersion Registry Key

For a Mounted Windows Image, simply provide a Path to the Mount Directory and it will mount the Registry and do the work for you

So now you can make quick work getting the ReleaseId using the following examples