I'm going thru a Windows Manufacturing process to make custom ISO; a prototype deployment that i want to spawn from for development; I'm not trying to make an OOBE/ISO. I have used this scheme in the past for WS2012r2 and WS2016 deployments without any issues. For this WS2019 attempt, i get an error. This is what i did along with the resultant error ...
- I created a DataCenter server with Desktop UI as a Hyper-V VM from MSDN download: en_Windows_Server_2019_updated_March_2020_x64_dvd_337baef4.iso
- Ran WSUS against this VM for all current updates; up to 2020-04-25
- Mounted this VHD and captured as WIM.
- Extracted contents of said MSDN/ISO to an on-disc location.
- Replaced the ...\Sources\Install.wim with custom/captured wim.
- Ran oscdImg v2.56 against this on-disc location as follows ...
oscdimg -m -o -u2 -lBase.WS2019LTSC;2020-04-25 -udfver102 -bootdata:2#p0,e,bF:\SysPrep.Images\Extracts\WS2019LTSC-x64\boot\etfsboot.com #pEF,e,bF:\SysPrep.Images\Extracts\WS2019LTSC-x64\efi\microsoft\boot\efisys.bin F:\SysPrep.Images\Extracts\WS2019LTSC-x64\"F:\SysPrep.Images\ISO\Base.WS2019LTSC;2020-04-25.iso"
... and it resolves as:
Error: Boot sector data could not be processed.
Any help to resolve this; create the intended ISO, very much appreciated!