while migrating Windows XP to Win7. client will receives the advertisement after that client machine will get boot images from primary site server. i am not sure about the process someone explain with flow chat. i am confusing boot images & WINPE

Boot images are based on WinPE. The boot images are downloaded from the PXE service point. You can either use IPhelpers or DHCP options to tell the clients were to get the boot images from.Torsten Meringer | http://www.mssccmfaq.de

either it's same or different. how you differ those things

Kindly go through 'Setting Up IP Helpers' into below article http://blogs.technet.com/b/system_center_configuration_manager_operating_system_deployment_support_blog/archive/2011/10/14/troubleshooting-the-pxe-service-point-and-wds-in-configuration-manager-2007.aspxRegards, Sachin

my question is win pe & boot images are same? how differentiate between those or definition of those

my question is win pe & boot images are same? how differentiate between those or definition of those Boot image is a WinPE image. check below to know more about WinPE. http://technet.microsoft.com/en-us/library/dd799308%28v=ws.10%29.aspx Regards, Sachin