WDS:The selected disk space is not of type ESP.

Hello,

I'm configuring the WDS on Server 2016 and I want to create unattendent.xml. 

PXE starts normally but then I see an error (please look at screenshot).

If I set Primary, the error is

If I set Primary ,the error in log file is:

"IBSLIB LogReasons: [BLOCKING reason for {disk 0 offset 0x100000}: CanBeSystemVolume] The selected disk space is not of type ESP".