I covered the general layout and operation of UEFI boot in my part one. Now it's time to get down to brass tacks, and see what my multi-boot configuration looks like.

The UEFI boot manager entry identifies a FAT32 partition and device by UUID and an EFI binary contained there. A MBR contains executable code (Grub stage 1) and chainloader information.

A new UEFI Secure Boot bypass vulnerability tracked as CVE-2024-7344 that affects a Microsoft-signed application could be exploited to deploy bootkits even if Secure Boot protection is active.

I found a setup guide from EMC that says I need to create a RAMdrive on an EFI-based system to properly configure the server to boot 2003 from SAN.

UEFI, or Unified Extensible Firmware Interface, is a complete re-imagining of a computer boot environment, and as such it has almost no similarities to the PC BIOS that it replaces.