Boot Tool Grub Detailed

Boot Tool Grub Detailed

Guide

A bootstrapper is a program that resides in the first sector of the hard disk (MPR, master boot record). Grub is a powerful multi-system boot program that specializes in the coexistence of Linux with other operating systems. Let me introduce the specific contents of the grub.conf file and what it means.

Use the command to view the contents of the grub.conf file:

#vi/boot/grub/menu.lst

parameter Interpretation

1. default=0# default after adding a number N, indicating n+1 "title" operating system, 0 means the first "title" of the operating system, and so on. 2. timeout=0# timeout Indicates the default wait time, which is set to 0 to indicate that the system will automatically load the default operating system after booting. 3. splashimage= (hd0,3)/boot/grub/splash.xpm.gz# Specifies the path to the screen image file to use when Grub boots. 4. hiddenmenu# Hide menu option 5. Title Red Hat Enterprise Linux (2.6.32-220.e16.i686) # Title defines the name of the Start menu item, and the string following the title is the option displayed on the menu item. 6. Root (hd,0) # Sets the root partition of grub, which is the partition or boot folder that corresponds to/boot. 7. Kernel/vmkinuz-2.6.32-220.e16.i686?ro root=uuid=d67e208c-2791-4692-a615-c4e96b6ae355 Rd_NO ... rd_NO_DM# Specifies the kernel file (vmkinuz-2.6.32-220.e16.i686) and the root device (root=uuid=d67e208c-2791-4692-a615-c4e96b6ae355) to be mounted, RO is the meaning of readonly. 8.initrd/initramfs-2.6.32-220.e16.i686.img# specifies that the memory image disk is initialized.

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Boot Tool Grub Detailed