What happens when we turn on our workstation and try to boot into Linux? The BIOS checks the system. The Boot loader finds the kernel image, loads it into memory, and starts it. The kernel initializes devices and their drivers. The kernel mounts the root filesystem. The kernel starts the init program. init gets the rest of the processes started The last process that init starts will allow you to login. | The Joy of Penguins Linux System Administration Linux System Administration The Boot Process . What happens when we turn on our workstation and try to boot into Linux o The BIOS checks the system. o The Boot loader finds the kernel image loads it into memory and starts it. o The kernel initializes devices and their drivers. o The kernel mounts the root filesystem. o The kernel starts the init program. o init gets the rest of the processes started o The last process that init starts will allow you to login. Prev Page 1 Next http levan 5 6 2005 3 06 17 PM The Joy of Penguins Linux System Administration Linux System Administration The Boot Process . What is the Master Boot Record MBR o It is the first 512 bytes located on the first sector of the media. o The MBR has enough information to determine four primary partitions . The start cylinder for each partition . The number of cylinders for each partition . The id or type of each partition . Is the partition bootable Prev Page 2 Next http levan 5 6 2005 3 06 23 PM The Joy of Penguins Linux System Administration Linux System Administration The Boot Process . What is the Boot Loader o First stage The boot loader locates and reads into memory the first stage of an operating system. Second Stage The boot loader then transfers control to the rest of the operating system. o In order for a medium to be bootable the boot loader must be on one of the following . The boot sector of a floppy disk . The MBR of the first hard disk . The MBR of the first CD-ROM device . The boot sector of a Linux filesystem partition on the first hard drive . The boot sector of an extended partition on the first hard drive . Many Linux distributions are using GRUB GRand Unified Boot loader Prev Page 3 Next http levan 5 6 2005 3 06 24 PM
