系统安装完毕后，启动操作系统就会这样。
waiting for device /dev/sdb2 to appcar: not found-- device nodes:
[:disk:unexpected operator
console disk failed:fb0 hda loop0 loop1 loop2 loop3 loop4 loop5 loop6 loop7 md0 mknod null ram ram0 ram1 ram10 ram11 ram12 ram13 ram14 ram15 ram2 ram3 ram4 ram5 ram6 ram7 ram8 ram9 ramdisk sda sda1 sda2 shm tty1 tty2 zero no root device found:exiting to /bin/sh       
求解决办法。