I am using Windows Deployment Services on Windows Server 2012 R2 for PXE boot and wanted to change the timeout from the default 30 seconds when choosing which boot image to use. I actually wanted to disable the timeout count down but that does not appear to be an option.
You can use bcdedit to modify the timeout of the PXE boot responses. Valid options are 0-9999 seconds, with 0 immediately going to your default boot image.
From an elevated command prompt on the server, you will type the command:
bcdedit.exe /store "D:\WDS\Boot\x86x64\default.bcd" /timeout 9999
Replace the path in the command with the correct path to your x86, x64, and x86x64 bcd files. These are found in the path specified when WDS was setup.
Replace ‘9999’ with the number of seconds you wish the timeout to offer before it will continue the boot process with the top boot image.
After you successfully update each bcd file, you need to stop and start the WDS server in order to refresh the cached boot images. Use the following commands:
You may then test your PXE boot and you should see that the countdown timer now reflects the setting you have specified in the command.