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This article mainly talks about "the installation and use of grub under LINUX system". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Now let the editor to take you to learn "the installation and use of grub under the LINUX system"!

Installation of grub software package

1. Install rpm or source package

2, install into mbr

* write / boot/grub/grub.conf file

* grub-install / dev/hda

Make a grub boot disk (a / boot directory will be created on the floppy disk automatically)

Mke2fs / dev/fd0

Mount / dev/fd0 / mnt/floppy

Grub-install-- root-directory=/mnt/floppy/' (fd0)'

Using grub Boot disk to restore the covered Boot system

Installing windows first can recognize and start windows when installing linux,grub. In this process, grub can not directly load the windows core boot file, but call windows's own bootstrap boot.ini is usually the boot sector of the partition where windows is located, but when you install the windows system again, mbr will be rewritten. As a result, you can only start the newly installed windows, but not the linux, because grub itself is installed in mbr and is overwritten by the boot of the newly installed windows.

Grub > root (see root)

Grub > find / boot/grub/grub.conf (see which partition grub.conf is in)

Grub > root (hd0,0)

Grub > setup (hd0) (reinstall grub into hd0's mbr)

Grub profile description

Default saved specifies that the default startup item is the last saved value

Default 0 starts from the first menu by default

Splashimage (hd0,0) / boot/grub/splash.xpm.gz specifies the grub background picture

Timeout 10 specifies the time of menu delay

Title Red Hat linux specifies the name of the menu

Root (hd0,0) sets the root device root of grub to the partition where the linux kernel resides

Kernel / boot/vmlinuz-2.4.20-8 ro root=LABEL=/ loads linux kernel

Initrd / boot/initrd-2.4.20-8.img uses the initrd command to load the image file

Title winxp defines the windows startup menu

Map (hd0) (hd1) uses the map command to swap disk or partition identifiers in BIOS to start windows on the second hard disk

Map (hd1) (hd0)

Root (hd1,0) sets the root device where the real windows is located as the root device of grub

Makeactive sets the root device to the active partition (cannot boot from the inactive partition for windows)

Chainloader+1 calls the boot loader of the Windows partition to boot the windows system

Savedeafult-- > Save the current startup item as the default startup menu

At this point, I believe you have a deeper understanding of "the installation and use of grub under the LINUX system". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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