From: dan@djph.net   
      
   On 2024-12-15, bad sector wrote:   
   >   
   > Since Intel have decided to fianally kill legacy BIOS in 2025 I have no   
   > choice left. Knowing this day would come I've already created an EFI #1   
   > partition, formatted with   
   >   
   > # mkfs.fat -F 32 /dev/sda1   
   > [...]   
   > My current motherboard supports Legacy BIOS only but I'm getting a new   
   > board that supports EFI (only I think). How do I get the new motherboard   
   > started up using my existing boot disk above?   
   >   
   > What happens when the disk fails? What's the BIOS and boot recovery   
   > after I restore all partitions form images? Can I also keep an image of   
   > the EFI partition and run again with that after a recovery?   
      
   The disk fails.   
      
   The "EFI System Partition" isn't really all that functionally different   
   than the MBR of HDD on a BIOS-boot computer.  I *BELIEVE* you have to   
   specifically format this as "EFI System Partition" instead of just FAT32   
   (but I've never done it manually).   
      
   I *BELIEVE* that this system partition is required to be stuffed   
   somewhere within the first 2 TiB of a GPT-formatted drive, such that it   
   is backwards compatible with MBR.   
      
   Primary UEFI configuration (e.g. date/time, hardware config, etc.) all   
   lives on battery-backed RAM of some sort or other, same as it always has   
   under BIOS.   
      
      
      
      
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