Windows 7 Migration Plan Guide Using Lite Touch Deployment :Part 7 ( WDS,DHCP PXE boot Configuration )
Configuring the WDS
WDS is the PXE Responsible so MDT relay on WDS to offer PXE requests
Setup a location for the WDS files (not recommended by MS to be as same as OS but so far its working )
First option does not make sense to be selected unless you need to turn off the WDS
Second option will work only with current computer accounts from you active directory
Third option will be the best for our scenario
We add the LT WIM boot file created by MDT when we update the share
Configuring DHCP to serve PXE request
I have seen many blog post and tech documentation telling you on how to configure the PXE boot .first I would like to clear out the any boot redirection is not supported by Microsoft. And so far I needed to add option for DHCP 66 to make things work as it should across many organizations (across firewalls ,Vlans,…etc. )
Next we set up option 67 bootfile name to : boot\x86\wdsnbp.com
Booting from PXE and Install Windows 7
We do not need to capture the windows right away so we skip this option
Now we have a fresh OS ready to go
and our windows 7 machine ready to go 
