What are the differences between bootthink, clover, Chameleon, easybcd, and grub? What is their relationship with bios, uefi, mbr, and gpt?

I would like to say that people who know these names are not vulgar.

Only used BIOS/UEFI.

LILO/GRUB,mbr/gpt.

From the boot process of i386/amd64, BIOS/UEFI is used first, and then mbr/gpt is read under BIOS/UEFI control.

If there is LILO/GRUB, use LILO/GRUB to boot the system.

Regarding BIOS/UEFI, please refer to the motherboard manual and use the motherboard manufacturer's special tools to upgrade and backup BIOS/UEFI.

Tools for mbr/gpt.

Fixmbr under windows cli fdisklinux cli fdisk, parted, sfdiskgrub tool grub-setup grub-install under linux, etc. For linux/freebsd/windows to store on the same computer, please use grub2.

Regarding mbr/gpt, LILO/GRUB, it can be read through the dd command and interpreted with xxd.

Binary maniacs can use the following command to view: under linux/unix system dd if=DEVICE_NAME bs=512 count=1 | xxd block.512.bin Statement: Regarding the operation of BIOS/UEFI, it may cause soft damage to the computer motherboard (for dual-core systems)

BIOS motherboards can automatically recover. For single BIOS motherboards, remove the BIOS's EEProm (Electrically Erasable Programmable Read-Only Memory) and rewrite it. This process requires a dedicated chip writing device).

MBR/GPT operations may cause data loss on the hard disk.

Therefore, please proceed with caution unless necessary.

Somehow, I remembered the negative typical CIH.

A safer method is to use a separate computer, use a dual BIOS motherboard, and use a mechanical hard drive that can be erased (without data) to do such experiments.

The above is the professional knowledge of system administrators/programmers, and general computer users can ignore such problems.