During a PXE boot, when the boot image file is being loaded in the client, it should not take any longer than a few minutes time depending on the size of the boot.wim and your network. If it seems that your PXE boot times are extremely slow, you may be able to speed up the process by increasing the TFTP block size. This article will show you how to speed up PXE boot in WDS and SCCM.
Trivial File Transfer Protocol (TFTP) is the network protocol used for downloading all files during network boots. TFTP is an inherently slow protocol because it requires one ACK (acknowledgment) packet for each block of data that is sent. The server will not send the next block in the sequence until the ACK packet for the previous block is received. As a result, on a slow network, the round-trip time can be very long.
Change the Maximum Block Size to 16784 on your WDS server
Je moet x64 aanzetten als je 64bits OS wilt uitrollen via WDS zie het volgende stukje tekst:
• x64-based client computers do not receive an x64 Windows PE boot image. This can occur if the PXE basic input/output system (BIOS) implementation of the network booting computer does not correctly identify itself as being capable of working with x64-based computers. To work around this issue, enable architecture detection in the boot programs. To do this, run this command on your WDS server: