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SCCM 2007 and MDT PXE imaging workflow

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I have an inherited environment and just trying to understand the PXE process


Currently I:



Add computer manually in SCCM

Add computer to collection to boot and reimage computer with XP image


Go to computer, reboot and press f12 to PXE boot and f12 to start imaging


The imaging actually goes to a MDT image screen (to select the image from MDT to use)


My assumption ....is:


The PXE server checks to see if there is a SCCM advertisement for the computers MAC address, if there isn't it passes it on to MDT to give the computer an image.



A few hours later if you boot the PC and f12 the SCCM image is sucessfully loaded.


I am assuming that it takes a few hours for "all" of SCCM to know it exisits?

Is this "normal" behaviour for MDT to be the fallback image option?




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No and no. It is normal to boot to MDT if SCCM fails, Did you try to boot the computer from SCCM Before you imported it and added it to the Collection? THen the PXE cache could cause the issue. http://sccmcorner.blogspot.se/2012/03/i-had-issue-with-laptop-that-was-loaded.html

Normally I use Unknown computer support so that if the computer doesn't exist in SCCM it is treated as a "unknown" device and can boot anyway:http://technet.microsoft.com/en-us/library/cc161877.aspx


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