Question : Problem: PXE Boot Error with Symantec Ghost

I am trying to setup a PXE and think I have everything setup right however when i try to connect with a client I keep getting under my TFTP server log
TFTP Read C:\TFTPBOOT\mba.pxe from 192.168.20.153 Abort
TFTP Read C:\TFTPBOOT\mba.pxe from 192.168.20.153 Timeout

I have tried everything i can think of any thoughts

Answer : Problem: PXE Boot Error with Symantec Ghost

Have you checked to see if TFTP is being blocked at the router/switch level?  I had similar problem several years ago and that was the issue.