昨天调试一个程序的时候，把界面设置成了POPUP方式，结果触发断点的时候，界面不能最小化，程序就死到那了，动不了，没办法只好按电源了，结果启动的时候提示
An automatic file system check (fsck) of the root filesystem fialed.
A manual fsck must be performed, then the system restarted.
The fsck should be performed in maintenance mode with the root filesystem mounted in read-only mode.
*The root system is currently mounted in read-only mode.
A maintenance shell will now be started.
After performing system maintenance , press CONTROL-D to terminate,the maintenance shell and restart the system.
Give root password for maintenace
(or type Control-D to continue)
输入密码，结果回不到图形界面了，startx也没用，就BAIDU了下，输入fsck，一路按y，结束之后重启就OK了