CentOS Server 由于机房断电，重启sever 启动报错：
*** An error occurred during the file system check.
*** Dropping you to a shell;the system will reboot
*** when you leave the shell.
*** Waring --SELinux is active
*** Disabling security enforcement for system recovery.
*** Run 'setenforce 1'to reenable.
*** Give root password for maintenace
(or type Control - D to continue):
解决方法：
输入root口令进入，再执行命令： fsck ，根据提示 输入 Y，确认修复，输入n次Y 后，reboot 问题解决。