Guide the latest GRUB tool for detailed explanation

Guide the latest GRUB tool for detailed explanation
GuideA boot program is a program that resides in the first sector of the hard disk (such as the FLPs and primary boot records. GRUB is a powerful multi-system boot program dedicated to handling the coexistence of Linux and other operating systems. The following describes the specific content and its meaning in the grub. conf file.

Run the following command to view the content of the grub. conf file:

#vi /boot/grub/menu.lst

Parameter description

1. default = 0 # Add a number n after default, indicating n + 1 "title" operating system, 0 indicating the first "title" operating system, and so on. 2. timeout = 0 # timeout indicates the default wait time. If it is set to 0, the system will be automatically loaded to the default Operating System after the system is started. 3. splashimage = (hd0, 3)/boot/grub/splash.xpm.gz # specifies the path for storing the screen image files used during GRUB boot. 4. hiddenmenu # Hide menu options 5. title Red Hat Enterprise Linux (2.6.32-220. e16.i686) # title defines the name of the Start menu item. The string after the title is the option displayed on the menu item. 6. root (hd, 0) # Set the root partition of GRUB, which is the partition corresponding to/boot or the partition where the boot folder is located. 7. kernel/vmkinuz-2.6.32-220.e16.i686ro root = UUID = d67e208c-2791-4692-a615-c4e96b6ae355 rd_NO ...... rd_NO_DM # specify the Kernel File (vmkinuz-2.6.32-220.e16.i686) with the root device to be mounted (root = UUID = d67e208c-2791-4692-a615-c4e96b6ae355), ro is readonly meaning. 8. initrd/initramfs-2.6.32-220.e16.i686.img # specifies the initialization memory image disk.

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