Windows 7 - Custom PE Image

I am trying to import a custom PE image into SCCM but I got a problem, SCCM requires the image to be "finalized". I have found tons of documentation of how to do it using peimg.exe the problem being that WAIK for Win 7 doesn't have peimg instead uses DISM for most everything. Anyone have any idea how I can finalize a boot image in the new WAIK? Any help would be appreciated.

peimg.exe /prep C:\temp\winpe_amd64\mount /f

Ok this might be my issue, I don't have peimg.exe in my waik folder (or any subfolders). I just assumed that it was now a DISM command.

New Features in the Windows AIK

Sounds like it is a DISM command - you just issue the peimg.exe /prep command even tho. you can't see peimg as a separate tool.

Did you try it?

I haven't done it myself - so please keep us posted of anything you find.

I think I already tried just running it and got an error, I will try again tomorrow just in case. I don't remember the error I got so it might have just been syntax, who knows. Thanks a bunch, I will post the outcome tomorrow.

This may be useful:
https://www.sit.auckland.ac.nz/Creat..._for_Windows_7

Ok so instead of dealing with possible errors from my previous attempts I did a cleanup and deleted all associated folders and started clean. I got to the finalization step with only a few hiccups (couple errors in my driver install and for the life of me I can't find trace32 on my LM or server).

I ran:
peimg.exe c:\temp\winpe_x86\mount /f

and I got the following error:
'peimg.exe' is not recognized as an internal or external command, operable program or batch file.

Any ideas?

PS. Thanks for that link, sped things along much quicker this time, though I still got an error in the process.

Still wondering if anyone has any clue why I can't run peimg?