[root@localhost /]# fdisk -l //查看分区
Disk /dev/sda: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000b1db4
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 102400 83 Linux//这个为/boot启动分区
Partition 1 does not end on cylinder boundary.
/dev/sda2 13 144 1048576 82 Linux swap / Solaris
Partition 2 does not end on cylinder boundary.
/dev/sda3 144 2611 19819520 83 Linux //这个为/根分区
[root@localhost /]# mount//查看所有挂载分区
/dev/sda3 on / type ext4 (rw)//根分区
/dev/sda1 on /boot type ext4 (rw)//boot分区为sda1
devpts on /dev/pts type devpts (rw)
tmpfs on /dev/shm type tmpfs (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
/dev/sr0 on /mnt type iso9660 (ro)
[root@localhost /]# grub//启动grub
Probing devices to guess BIOS drives. This may take a long time.
GNU GRUB version 0.97 (640K lower / 3072K upper memory)
[ Minimal BASH-like line editing is supported. For the first word, TAB
lists possible command completions. Anywhere else TAB lists the possible
completions of a device/filename.]
grub》 root (hd0,0) //首先find /grub/stage1查看/boot分区为(hd0,0)
root (hd0,0)//设置/boot分区为/dev/sda1
Filesystem type is ext2fs, partition type 0x83
grub》 setup (hd0)//重新安装grub
setup (hd0)
Checking if “/boot/grub/stage1” exists.。。 no
Checking if “/grub/stage1” exists.。。 yes
Checking if “/grub/stage2” exists.。。 yes
Checking if “/grub/e2fs_stage1_5” exists.。。 yes
Running “embed /grub/e2fs_stage1_5 (hd0)”。。。 26 sectors are embedded.
succeeded
Running “install /grub/stage1 (hd0) (hd0)1+26 p (hd0,0)/grub/stage2 /grub/grub.conf”。。。 succeeded
Done.
grub》 quit//退出
3.重新reboot启动系统进入grub界面测试

4.查找find /grub/stage1然后找到/boot分区为(hd0,0),指定kernel,initrd, boot启动系统成功。










