I have been testing redeploying xp via sccm r2 (beta) and I want to get it working with a single image, multiple HAL and from a vmware image,

I had mega problems with pxe booting and denying and failing, the logs are saying either the netbios or the guid are not matching.. i found a useful post

http://myitforum.com/cs2/blogs/cstauffer/archive/2009/05/11/configmgr-osd-mdt-clear-pxe-cache.aspx

basically, restart the “Windows Deployment Service” on the SCCM machine, this will flush the log and allow the machine to boot..

thanks