我关闭电脑并重新打开，但出现严重错误，无法重新登录

Question

我遇到了一个大问题，我没有 CD 可以启动，而当我的 PC 启动时就发生了这种情况。

No init found. Try passing  init= bootarg.
Busybox v1.21.1 (Ubuntu 1:1.21.0-iubuntu) built-in shell (ash) Enter 'help' for a list of built-in commands
(initramfs)
(initramfs)
Built-in commands:
. : [ alias break cd chdir command continue echo eval exec exit export false getopts hash help let local orinit pwd read readonly unset wait [ [[ ash awk basename blockdev  cat chmod chroot chvf egrep env expr false fbset fdflush fgrep find grep gunzip gzip hostname iconfig............etc

(initramfs) ubuntu
/bin/sh: ubuntu: not  found
(initramfs)

我相信当我按下“帮助”时就会出现这个问题。