linux grub 的加密与破解

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[root@beyond ~]# /sbin/grub-md5-crypt
Password:
Retype password:
$1$tKjdM$WH5Aq18eshWF9JhQ9NVBC0
[root@beyond ~]# vi /boot/grub/grub.conf

[root@beyond ~]# vi /boot/grub/grub.conf
[root@beyond ~]# cat !$
cat /boot/grub/grub.conf
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE:  You have a /boot partition.  This means that
#          all kernel and initrd paths are relative to /boot/, eg.
#          root (hd0,0)
#          kernel /vmlinuz-version ro root=/dev/sda2
#          initrd /initrd-version.img
#boot=/dev/sda
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
password --md5 $1$tKjdM$WH5Aq18eshWF9JhQ9NVBC0
hiddenmenu
title Red Hat Enterprise Linux AS (2.6.9-42.ELsmp)
        root (hd0,0)
        kernel /vmlinuz-2.6.9-42.ELsmp ro root=LABEL=/ rhgb quiet
        initrd /initrd-2.6.9-42.ELsmp.img
title Red Hat Enterprise Linux AS-up (2.6.9-42.EL)
        root (hd0,0)
        kernel /vmlinuz-2.6.9-42.EL ro root=LABEL=/ rhgb quiet
        initrd /initrd-2.6.9-42.EL.img
以上过程完成grub密码的MD5加密

破解linux grub 密码

首先输入第一张光盘输入 linux rescue

切换当前的根目录：chroot /mnt/sysimage

删除 grub.conf 里的MD5加密密码即可

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