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fstabの記述ミスによる起動不可から復旧

Last updated at Posted at 2017-08-21

概要

fstabの記述を誤り、起動時に以下のようなエラーが出て起動できない状態に陥りました。
その時の復旧手順 for CentOS7

Welcome to emergency mode! After in logging in ,type "journalctl-xb" to view system logs , "systemctl reboot" to reboot , "systemctl default" to try again to boot into default mode.
Welcome to rescue mode!
Type "systemctl default" or ^D to enter default mode.
Give root password for maintenance.
Give root password for maintenance.
(or type Control -D to continue): (or type Control -D to continue):

回避方法

  1. エラーの続きにrootパスワードを入力し、メンテナンスモードに入る

  2. 「/」ファイルシステムが読み取り専用モードでマウントされているため、書き込み可能なようにマウントし直す
    # mount -o remount,rw /

  3. fstabの記述ミスを削除して保存

  4. 再起動

参考元

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