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Sunday 7 October 2012

TYPE OF BOOT LOADERS IN LINUX


GRUB
  • GNU GRUB short for GNU Grand Unified Bootloader.
  • Reference implementation of the Multiboot Specification, which provides a user the choice to boot one of multiple operating system installed on a computer or select a specific kernel configuration available on a particular operating system's partitions 
  • Features 
  • - user can dynamically configure the GRUB sub-syste.
  • - GRUB is highly portable and can be used in a variety of different user interfaces.
  • - it can download operating-system images from a network and can support operating system that do not multi-boot.

LOADLIN
  •  Loadlin is a Linux boot loader that runs under DOS or Microsoft Windows.
  • Loadlin and the Linux kernel are both files on a file system accessible to DOS/Windows.
  • It loads the Linux kernel into memory from a file. It also places various configuration parameters into memory and transfers control to the kernel. 
  • The kernel reads these parameters, initializes and runs, replacing DOS/Windows completely.

 LILO
  •  LILO was default boot loader for most Linux distributions in the years after the popularity of loadlin.
  • LILO is a boot loader for Linux/x86 and other PC operating systems.
  • It is responsible for loading your Linux kernel from either a floppy or a hard drive and passing control to it.
  • It is capable of booting beyond cylinder 1024 of a hard disk if the BIOS supports EDD packet call extensions to the int 0x13 interface.
  • LILO can also be used to boot many other operating systems, including DOS, Windows (all versions), OS/2, and the BSD variants
  • The LILO distribution includes full source, documentation and support files.

SYSLINUX
  • The Syslinux Project is suite of lightweight IBM PC MBR bootloaders for starting up computers with the Linux kernel.
  • It normally used for booting full Linux installations since Linux is not normally on FAT file systems.
  • Instead, it is often used for boot rescue floppy disks, USBs or other lightweight boot systems.
  • Syslinux also presents a simple text interface that can be used to select between configurations defined in the configuration file and can be used to add parameters to the kernel.


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