ubuntu启动报错/dev/sda4:UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY

断电或者非正常关机之类的误操作，系统起不来
这台服务器磁盘被拔出去检测过，之后再插回来就这样起不来了
/dev/sda4:UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.
(i.e, without -a or -p options)
fsck exited with status code 4
The root filesystem on /dev/sda4 requires amanual fsck
BusyBox v1.22.1(unbuntu 1:1.22.0-15ubuntu1) built-in shell (ash)
Enter ‘help’ for a list of built-in commands.
(initramfs)
输入fsck
然后一直yes
修复完之后
最后ctrl+d，进入开机界面加载成功，就进入系统了