正在CentOS 6体系外,果为没有小口或操做得误招致boot分区被增除了,逢到那种状况能否可以规复被增除了的boot分区呢?其真是能够的,上面随小编一同去理解高吧。
1.尾先操纵centos6镜像入进linux rescue营救形式。
2.封动sshd效劳,查看eth0获与的ip天址,而后用ssh secure shell 连贯。
SSH Secure Shell 3.2.9 (Build 283)
Copyright (c) 2000-2003 SSH Co妹妹unications Security Corp - http://www.ssh.com/
This copy of SSH Secure Shell is a non-co妹妹ercial version.
This version does not include PKI and PKCS #11 functionality.
[root@localhost ~]# cd /boot //入进/boot分区
[root@localhost boot]# ls //查看boot分区的内容
config-2.6.32-71.el6.i686 symvers-2.6.32-71.el6.i686.gz
grub System.map-2.6.32-71.el6.i686
initramfs-2.6.32-71.el6.i686.img vmlinuz-2.6.32-71.el6.i686
[root@localhost boot]# cd 。。//返回上层目次
[root@localhost /]# rm -rf /boot/*//增除了/boot分区一切内容
[root@localhost /]# ls /boot//查看/boot分区内容为空
[root@localhost /]# mount /dev/sr0 /mnt//挂载cdrom设施到/mnt目次高
mount: block device /dev/sr0 is write-protected, mounting read-only
[root@localhost /]# rpm -ivh /mnt/Packages/kernel-2.6.32-71.el6.i686.rpm --root=/ --force //装置光盘的kernel硬件包
Preparing.。。 ########################################### [100%]
1:kernel ########################################### [100%]
[root@localhost /]# ls /boot //查看/boot分区内容
config-2.6.32-71.el6.i686 System.map-2.6.32-71.el6.i686
initramfs-2.6.32-71.el6.i686.img vmlinuz-2.6.32-71.el6.i686
symvers-2.6.32-71.el6.i686.gz
[root@localhost /]# mkdir /boot/grub//正在/boot目次新修一个grub目次
[root@localhost /]# touch /boot/grub/grub.conf//新修一个grub.conf设置文件
[root@localhost /]# cp -rf /usr/share/grub/i386-pc/* /boot/grub/ //把/usr/share/grub/i386-pc的一切内容拷贝到/boot/grub外。
[root@localhost /]# ls /boot//查看/boot分区内容
config-2.6.32-71.el6.i686 symvers-2.6.32-71.el6.i686.gz
grub System.map-2.6.32-71.el6.i686
initramfs-2.6.32-71.el6.i686.img vmlinuz-2.6.32-71.el6.i686
[root@localhost /]# ls /boot/grub/ //查看/boot/grub目次内容
e2fs_stage1_5 iso9660_stage1_5 stage1 vstafs_stage1_5
fat_stage1_5 jfs_stage1_5 stage2 xfs_stage1_5
ffs_stage1_5 minix_stage1_5 stage2_eltorito
grub.conf reiserfs_stage1_5 ufs2_stage1_5
[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//那个为/boot封动分区
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 //那个为/根分区
[root@localhost /]# mount//查看一切挂载分区
/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//封动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 co妹妹and completions. Anywhere else TAB lists the possible
completions of a device/filename.]
grub》 root (hd0,0) //尾先find /grub/stage1查看/boot分区为(hd0,0)
root (hd0,0)//配置/boot分区为/dev/sda1
Filesystem type is ext2fs, partition type 0x83
grub》 setup (hd0)//从头装置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//退没
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