Grading Checklist: PXE Boot Fails - UEFI Mismatch

A good response must include:

• Identified that UEFI PXE clients require a different boot file than Legacy BIOS clients (grubx64.efi vs pxelinux.0)
• Explained DHCP option 93 (Client System Architecture) and how to match on it
• Showed how to configure ISC DHCP to serve different boot files based on architecture type
• Verified that the UEFI boot file exists in the TFTP root directory
• Considered Secure Boot implications (signed bootloader like shimx64.efi may be needed)
• Used or referenced packet capture to confirm the DHCP option values being exchanged
• Verified TFTP server configuration supports UEFI client requirements
• Tested the fix on one server before rolling out to all 12
• Ensured backward compatibility so existing BIOS-based servers still work
• Documented the DHCP configuration change for the provisioning runbook
• Considered using DHCP vendor class or architecture matching for cleaner config