How to enable SCCM to support both BIOS PXE boot and UEFI PXE boot

Learn how to PXE Boot both BIOS & Uefimachines with DHCP policies and Custom Vendor Classes

One of the challenges that's IT deployment Administrator mayface in the field was the ability to boot both BIOS and UE Fimachines from the same WDS environment. This was exactly the issue ifaced when we organization decided to purchase a number of newsurface devices. These were the first set of devices that wereconfigured to natively boot to UEFI. This leaves-decide Froman organization standpoint whether you wish-boot all yourdevices using UEFI or the legacy Bios...or does it.

I am a strong believer that finding a workaround to a problem isnot a fix to the problem. To that end modern devices such as thesurface is meant to be booted using the native UEFI boot. However,many organizations may also still has legacy BIOS devices that donot support UEFI boot or just work better bootin G from BIOS. Whatever The reasoning behind this it's actually quite easy tosetup DHCP to provide the BIOS or UEFI boot file depending On Whatis used.

The solution!
By using DHCP policies and custom vendor classes for the Followingdhcp Options:

Option 60
Option 66
Option 67

The below assumes that you had SCCM configured with a PXE enableddistribution point and a valid and configured DHCP serve R. Youshould therefore is at a configured the state where your is able to pxeboot BIOS based devices.

Create Custom Vendor Classes for use with your Dhcppolicy

Think Custom Vendor Classes as Detection Method ' s used to determinehow devices is requesting a boot image from the DHCP s Erver.

• Open the DHCP Console and expand the IPv4 Node

• Right-click on ' IPv4 Node ' and select ' Define vendorclasses '

• Click ' Add '

• Create the UEFI 64-bit Vendor class first by entering thefollowing information

• Enter The following information for the Respectivefields:
  

• DisplayName: Pxeclient (UEFI x64)

• Description: pxeclient:arch:00007

• ASCII: pxeclient:arch:00007

• Click ' OK '

• Click ' Add '
  

• DisplayName: Pxeclient (UEFI x86)

• Description: pxeclient:arch:00006

• ASCII: pxeclient:arch:00006

• Click ' OK '

• Click ' Add '
  

• DisplayName: Pxeclient (BIOS x86& x64)

• Description: pxeclient:arch:00000

• ASCII: pxeclient:arch:00000

• Click ' OK '

Creating Custom DHCP Policies

UEFI 64-bit DHCP Policy

• Right-click ' Policies ' and Click ' New Policy '

• Give the policy a friendly name that coincides with the Yourvendor class naming scheme:
  

• PolicyName: pxeclient (UEFI x64)

• Description: delivers the correct bootfile for (UEFIx64)

• Click ' Next '

• On the ' Configure Conditions for the Policy ' page click ' Add '

• Select the ' Value ' drop-down box and selectthe pxeclient (UEFIx64) vendor class that's created in Previoussteps

• Ensure that check the box ' appendwildcard (*) '

• Select ' Add '

• Select ' Ok '

• Click ' Next '

• If you want the policy to affect only a specific range withinyour scope configure it, otherwise select No and click ' Next '

• On the Configure settings for the policy page ensure that ' Dhcpstandard Options ' are selected from the drop box

• Configure the following scope options:
  

• 060: pxeclient

• 066: IP Address of the SCCM or Wdsservice

• 067: Smsboot\x64\wdsmgfw.efi

• Cick ' Next '

• On the Summary pageclick ' Finish '

BIOS 32-bit & 64-bit Dhcppolicy

• Right-click ' Policies ' and Click ' New Policy '

• Give the policy a friendly name that coincides with the Yourvendor class naming scheme:
  

• PolicyName: pxeclient (BIOS x86& x64)

• Description: delivers the correct bootfile for Biosmachines

• Click ' Next '

• On the ' Configure Conditions for the Policy ' page click ' Add '

• Select the ' Value ' drop-down box and selectthe pxeclient (BIOS x86& x64) vendor class thatyou created in prev IOUs steps

• Ensure that check the box ' appendwildcard (*) '

• Select ' Add '

• Select ' Ok '

• Click ' Next '

• If you want the policy to affect only a specific range withinyour scope configure it, otherwise select No and click ' Next '

• On the Configure settings for the policy page ensure that ' Dhcpstandard Options ' are selected from the drop box

• Configure the following scope options:
  

• 060: pxeclient

• 066: IP Address of the SCCM or Wdsservice

• 067: smsboot\x64\wdsnbp.com

• Cick ' Next '

• On the Summary pageclick ' Finish '

UEFI 32-bit DHCP Policy

• Right-click ' Policies ' and Click ' New Policy '

• Give the policy a friendly name that coincides with the Yourvendor class naming scheme:
  

• PolicyName: pxeclient (UEFI x86)

• Description: delivers the correct bootfile for (UEFIx86) machines

• Click ' Next '

• On the ' Configure Conditions for the Policy ' page click ' Add '

• Select the ' Value ' drop-down box and selectthe pxeclient (UEFIx86) vendor class that's created in Previoussteps

• Ensure that check the box ' appendwildcard (*) '

• Select ' Add '

• Select ' Ok '

• Click ' Next '

• If you want the policy to affect only a specific range withinyour scope configure it, otherwise select No and click ' Next '

• On the Configure settings for the policy page ensure that ' Dhcpstandard Options ' are selected from the drop box

• Configure the following scope options:
  

• 060: pxeclient

• 066: IP Address of the SCCM or Wdsservice

• 067: Smsboot\x86\wdsmgfw.efi

• Cick ' Next '

• On the Summary pageclick ' Finish '

Remove Default PXE Options

• Ensure that you had removed the 067, 066, 060 Options from Thedefault scope options to ensure so the policies take precedenceotherwise you'll end up with conflict< /p>

As long as you had configured everything correctly you should nowhave the ability-boot machines from BIOS Oruefi. Hopefully this helps alleviate some of the stress surroundingyour PXE deployments. This have worked great on all ourdistribution points since implementation and have allowed ourdeployments to being much more Flexible.

How to enable SCCM to support both BIOS PXE boot and UEFI PXE boot