Final answer:
Updating an offline image of Windows in a VHD file involves mounting the VHD, applying updates through WSUS and DISM, and then unmounting the VHD.
Step-by-step explanation:
Steps to Update an Offline Image of Windows in a VHD File
To update an offline image of Windows included in a VHD file, you need to follow several steps. The process involves mounting the VHD, applying updates, and then unmounting the VHD. Here is a step-by-step guide:
Mount the VHD file using the Disk Management utility or by using the Mount-VHD PowerShell cmdlet.
Once the VHD is mounted, it will appear as a new drive in 'This PC'. Assign a drive letter to the mounted VHD if it is not assigned automatically.
Navigate to the Windows Update Standalone Installer (WSUS) and download the applicable updates for the Windows image. These will be .msu or .cab files typically.
Use the DISM (Deployment Image Service and Management Tool) command-line utility to apply the updates to the Windows image within the VHD. You have to point the DISM to the mounted VHD's drive letter.
After applying the updates, unmount the VHD and save the changes. This can be done through Disk Management or by using the Dismount-VHD PowerShell cmdlet.
Remember to perform these actions with administrative privileges as you will be modifying system files. Once the VHD is updated and unmounted, it will include the latest Windows updates in the offline image.