Ubuntu 16.04 一開機時,突然出現了下面的訊息,再次重新開機也沒用一樣卡住無限鬼打牆
Welcome to emergency mode! After logging in, type “journalctl -xb” to view system logs, “systemctl reboot” to reboot, “systemctl default” or ^D to try again boot into default mode. Give root password for maintained (or press Control-D to continue).
輸入 root 密碼登入打入 journalctl -xb
檢查開機訊息時,發現在 mount 硬碟時整個卡住,導致系統無法順利啟動
這個錯誤訊息常發生在載入 外部硬碟
、網路硬碟
等沒有載入導致
解決方式
在 emergency mode
登入 root 帳號後輸入下列指令讓 /etc/fstab
檔案有被寫入的權限
$ mount -n -o remount,rw /
/etc/fstab
是自動 mount 的設定檔案,使用 vi
或 vim
編輯此檔案
$ sudo vim /etc/fstab
在 /etc/fstab
檔案中將卡住的 mount 硬碟輸入 #
註解掉
# 註解前
UUID=bcb03e9a-fa15-4a6d-a8ea-ac2c8180654d /data ext4 errors=remount-ro 0 0
# 註解後
# 這一行掛載出現問題,在前方加入註解取消掛載
# UUID=bcb03e9a-fa15-4a6d-a8ea-ac2c8180654d /data ext4 errors=remount-ro 0 0
註解掛載指令後 /etc/fstab
檔案會長的像這樣
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/sda2 during installation
UUID=4fb9f563-7ae4-4df9-a028-fdc6b9e4f1a5 / ext4 errors=remount-ro 0 1
# swap was on /dev/sda3 during installation
UUID=cf0cf85a-6fed-4c43-901d-c946d6e1c5fa none swap sw 0 0
# 這一行掛載出現問題,在前方加入註解取消掛載
# UUID=bcb03e9a-fa15-4a6d-a8ea-ac2c8180654d /data ext4 errors=remount-ro 0 0
輸入指令切換成預設模式
$ systemctl default
重新開機後就可以正常進入系統了
systemctl reboot
參考資料
- Boot Into Rescue Mode Or Emergency Mode In Ubuntu 20.04 / 18.04
- How to exit emergency mode and boot to default mode in Linux | Velan
- ubuntu啟動出現welcome to emergency mode! Press Enter for maintenance 的檔案。 | 程式前沿
- linux出現welcome to emergency mode! 解決方法 - IT閱讀
- 阿就操場啊~: Linux開機進入emergency mode
- Linux 开机显示:welcome to emergency mode 的解决方法_Lance的博客-CSDN博客
- 阿就操場啊~: /etc/fstab的dump與pass
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