Linux system boot-grub.conf file

1.cat/boot/grub/grub.conf View grub.conf

default=0      #默认第一个titletimeout =5      in #若  5  seconds , use the default Obituary menu to start splashimage= (hd0,0)/grub/splash.xpm.gz     #这儿使用的是grub的识别方式hiddenmenu                    # Whether the full menu screen is displayed during the second title centos  (2.6.18-92.EL5)          #第一个选单的内容      root  (hd0,0)         kernel / vmlinuz-2.6.18-92.el5 ro root=label=/1 rhgb quiet               #Linux内核的位置               #root =label=/1    represents the location of the Linux root directory               #rhgb  quiet      color, Quiet mode               #除了上面的命令之外还有很多可以使用的命令         initrd / initrd-2.6.18-92.el5.img      #RAM  disk Location #kernel /vmlinuz-2.6.18-92.el5    and   root  (hd0,0)/vmlinuz-2.6.18-92.el5  are equivalent, initrd the same.

2. Two representations of disks

1. Mode 1 for the GRUB program

For grub, all types of hard drives are HD, in the format (hd#,n);

hd#, #表示第几个磁盘; the last n indicates the partition of the corresponding disk;

For example: SDA is the first hard disk, to find the first partition is (hd0,0).

this is used when addressing kernel and initrd in the grub.conf file.

2. Mode 2 for Linux operating system

This is the same way as when we use the hard drive when we enter the operating system.

For example, the first partition to find SDA is/dev/sda1.

addressing root= in the grub.conf file ... The root directory of the Linux system is used this way.

3. Kernel and root partition in/DEV/HDA1

Linux Addressing: (/DEV/HDA1)/boot/vmlinuz

Grub Addressing: (hd0,0)/boot/vmlinuz

Kernel (hd0,0)/boot/vmlinuz root=/dev/hda1

4. Kernel and root not in one partition/dev/sda1 (/boot),/DEV/SDA5 (/)

Linux Devices: (/DEV/SDA1)/vmlinuz

Grub Device: (hd0,0)/vmlinuz

Kernel (hd0,0)/vmlinuz root=/dev/sda5 ...

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Linux system boot-grub.conf file