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This article introduces the knowledge about "what are the common boot programs under Linux". In the actual case operation process, many people will encounter such difficulties. Next, let Xiaobian lead you to learn how to deal with these situations! I hope you can read carefully and learn something!

When you turn on your machine and POST completes successfully, the BIOS (Basic Input Output System) immediately locates the configured boot media and reads some commands from the MBR (Master Boot Record) or GUID (Globally Unique Identifier) partition table, which is the first 512 bytes of the boot media. The Master Boot Record (MBR) contains two important sets of information, the first being the boot program and the second being the partition table.

Excellent bootloader 1. GNU GRUB

GNU GRUB is a very popular, and probably the most widely used, Linux boot program with multiboot capabilities, based on the original Eirch Stefan Broleyn invention of GRUB (Unified Boot Program). GNU GRUB enhances the original GRUB with improvements, new features, and bug fixes.

Importantly, GRUB 2 has now replaced GRUB. It is worth noting that the name GRUB has been renamed GRUB Legacy, but it is not actively developed, although it can be used to boot older systems because bug fixes continue.

GRUB has some notable features:

Supports multiple boot support Multiple hardware architectures and operating systems such as Linux and Windows Provide a Bash-like interactive command line interface so users can run the GRUB command to interact with configuration files Allow access to the GRUB editor Support setting encrypted passwords to ensure security Support booting from the network, as well as minor features

2. LILO

LILO (Linux Boot Program) is a simple but powerful and very stable Linux boot program. Because GRUB has been greatly improved and many powerful features have been added, LILO has become less popular among Linux users.

When LILO boots, the word "LILO" appears on the screen, and each letter appears before and after a particular event. However, since December 2015, development of LILO has been discontinued, and it has many features such as the following:

No interactive command line interface support for some error codes No network boot support All files stored on the first 1024 cylinders of the drive Face BTFS, GTP, RAID, etc. limitations

3. BURG-New Bootstrap

Based on GRUB, BURG is a relatively new bootloader (development stopped in 2011). Since BURG originated from GRUB, it carries some of the main features of GRUB. However, BURG also offers some great features, such as a new object format that supports multiple platforms including Linux, Windows, Mac OS, FreeBSD, and more.

In addition, BURG supports highly configurable text and icon-mode boot menus, and plans to add "streaming" support for future work with different input/output devices.

4. Syslinux

Syslinux is a lightweight boot program that boots from CD-ROM drives, networks, etc. Syslinux supports file systems such as FAT on MS-DOS, ext2, ext3, ext4 on Linux, etc. Syslinux also supports uncompressed Btrfs on a single device.

Note that Syslinux does not have multiple file system boot capability because it can only access files on its own partition.

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