On the other hand if you are using DHCP then you would need additional configurations in addition to setting Option 66 and Option 67 on the DHCP Server. If you are using IP helpers then you don’t need to worry about whether or not client machine is using Legacy BIOS or UEFI when the machine boots up. UEFI booted systems use a GPT (GUID Partition Table) partition structure where Legacy BIOS booted systems use a MBR (Master Boot Record) partition structure.Ī lot of Production environments have systems with legacy bios and UEFI booting machines and if that is the case then our design needs to be able to support that. In regards to imaging the major difference is the partition structure used. UEFI is the newer standard and is more secure. The difference between Legacy BIOS and UEFI is the process that the firmware uses to find the boot target, Legacy Boot is the boot process used by BIOS firmware and UEFI boot is used by UEFI firmware. Is the client Machine using Legacy BIOS when boots up or is it using UEFI. There is another question that we would also need to answer. The real question that we are trying to answer is how is the client machine able to locate PXE boot server when it boots up using PXE. The main concern is should we use DHCP options or IP helpers. When it comes to enabling PXE for distribution points in Configuration Manager I get a lot of support questions with regard to what is best practice for setting up PXE for distribution points.
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