I've been working on a Windows 7 image for the past few days, getting it up to par with our needs and requirements. After I did all the work, I just remembered I needed to set a local group policy. Is there a way I can do this without having to re-sysprep and re-image the entire system again? Maybe through DISM or unattend.xml? Thanks!

What policy needs te be set.

What I know is for example the policy setting for: Prevent installation of Removable devices

GPEdit.msc then go to in Local Computer Policy ->Computer Configuration ->Administrative Templates->System -> Device Installation -> Device Installation Restrictions ->Enable/Disable the "Prevent installation of Removable devices".

is the same as

HKEY_LOCAL_MACHINE » Software » Policies » Microsoft » Windows » DeviceInstall » Restrictions

The keyname will be DenyRemovableDevices value = 1

So I think u should mount the image.

Load the registry components from %mount_dir%\windows\system32\config in the registry and add your settings.

The policy I need to change:

Computer Configuration > Administrative Templates > System > Device Installatioin > Allow remote access to the Plug and Play interface: Enabled.

HKEY_LOCAL_MACHINE » Software » Policies » Microsoft » Windows » DeviceInstall » Settings

AllowRemoteRPC REG DWORD 1 or 0

That worked perfectly. Thanks!

No problem