Recover Fstab Error
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How To Edit /etc/fstab In Single User Mode
Business Learn more about hiring developers or posting ads with us Unix & Linux Questions Tags Users Badges Unanswered how to fix boot failure due to incorrect fstab Ask Question _ Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only takes a minute: Sign edit fstab in recovery mode up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top How to fix boot failure due to incorrect fstab? up vote 12 down vote favorite 3 It seems that I have added incorrect record to /etc/fstab: //servername/share /mnt/share cifs defaults,username=myuser 0 0 When I did mount -a, it asked
Cannot Edit /etc/fstab Read Only
user password to mount network share. It seems that it cannot proceed without password on boot, so it is just hung. How can I fix fstab to prevent boot failure? rhel boot mount fstab share|improve this question edited Feb 10 '14 at 15:07 Pro Backup 1,13231841 asked Jul 26 '12 at 13:10 altern 5572918 add a comment| 4 Answers 4 active oldest votes up vote 14 down vote accepted It seems that I've found a solution: at the grub prompt, hit a to append options add init=/bin/bash to the end of the kernel command line and press enter The system will boot to a prompt like 'bash-3.2#' enter the following commands at the prompt mount -o remount,rw / vim /etc/fstab edit the fstab file commenting the errors by adding a # at the begining of each problematic line, save the file reboot by pressing CTRL+ALT+DEL share|improve this answer edited Jul 2 '15 at 11:51 elijahbee 34 answered Jul 26 '12 at 14:20 altern 5572918 I had to use mount -o remount,rw / --target / to succesfully remount in rw mode. Elsecase mount was picking the bad val
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Edit Fstab Grub
Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody http://unix.stackexchange.com/questions/44027/how-to-fix-boot-failure-due-to-incorrect-fstab can answer The best answers are voted up and rise to the top Accidentally deleted /etc/fstab file up vote 5 down vote favorite 3 I accidentally deleted my /etc/fstab file by running sudo rm /etc/fstab.Without knowing this, i shutdowned my Ubuntu OS. Now i can't be able to boot into my OS. My screen look like this.In some cases, a purple screen appears.Please give me http://askubuntu.com/questions/435965/accidentally-deleted-etc-fstab-file some solutions. command-line share|improve this question edited Mar 18 '14 at 17:27 asked Mar 18 '14 at 15:59 Avinash Raj 36.8k28118162 add a comment| 1 Answer 1 active oldest votes up vote 8 down vote accepted You have to recreate a new fstab file inside /etc directory and add an entry for your root partition, so that your Ubuntu os will boot. Method 1: Recreating /etc/fstab file via Recovery mode Boot into Recovery mode and then drop to root shell. Run sudo blkid command to know the UUID of your /(root) partition.It will show something like this, /dev/sda1: UUID="52e062e0-716c-4828-9bf1-05b93fdaef93" TYPE="ext4" /dev/sda1: UUID="2F4DAFCF02D7EBEB" TYPE="ntfs" /dev/sda3: UUID="039E0CF305398945" TYPE="ntfs" /dev/sda5: UUID="C68C57908C5779BF" TYPE="ntfs" From the sudo blkid output, identify your root ext4 partition and note down its corresponding UUID. Now mount your / partition in Read Write Mode by running the below command.Please note that the simple mount / command for mounting your root partition won't work because of the deletion of /etc/fstab. So, if your / was /dev/sda1, run this command: mount -t ext4 -o rw,remount /dev/sda1 / The above command will mount your / partition in read write mode.Run the below command to create a
In submit Tutorials Questions Projects Meetups Main Site logo-horizontal DigitalOcean Community Menu Tutorials Questions Projects Meetups Main Site Sign Up Log In submit View All Results By: Justin Ellingwood https://www.digitalocean.com/community/tutorials/how-to-recover-from-file-system-corruption-using-fsck-and-a-recovery-iso Subscribe Subscribed Share Contents Contents We hope you find this tutorial helpful. In addition to guides like this one, we provide simple cloud infrastructure for developers. Learn more → 14 How To Recover http://www.systutorials.com/39557/bypassing-bad-fstab-failure-while-booting-linux/ from File System Corruption Using Fsck and a Recovery ISO Posted Dec 20, 2013 110.2k views Linux Basics System Tools FAQ Introduction Despite your best efforts, there are certain instances where your server how to might suffer file corruption and need recovery. Sometimes this happens when your VPS is powered off abruptly, or when a piece of software or hardware malfunctions suddenly. Either way, there are steps you can take to try to recover your VPS, or at least your important files. We will go through the steps we recommend you taking in this guide. Important Considerations and Risks In any how to edit circumstance, good backups are the best way to prevent data loss. Implementing a reliable offsite backup solution and thoroughly testing it on a regular basis is the only way to guarantee the integrity of your important data. While recovery options like fsck are often useful, there is no guarantee that it will work correctly and success is often simply a matter of luck. The fsck operation can occasionally cause data corruption on active disks. For this reason, the fsck procedure outlined below operates on an unmounted file system to minimize this risk. Problems can still occur in cases of severe damage though, so consider these last-resort methods for data recovery. Attempt Recovery with Fsck Kernel Newer distributions including FreeBSD, CoreOS, Debian 8 and Ubuntu 15.04 cannot use the recovery kernel. If you are using one of these releases please proceed to the "Attempt Recovery with a Recovery ISO" section below. The first step in trying to recovery your system from file corruption is to mount our recovery kernel that will allow you to run fsck, which is a file system checking utility. This can help find and fix errors in your filesystem. Run Fsck on your
is created with errors or the hardware configuration changes such as adding hard disks, Linux will boot into failure state. We can bypass the fstab failure by adding booting parameters to Linux. We can do this in two methods: Method 1: Boot to single user mode ∞When booting into single user mode, Linux will not mount anything. Then we can remount the / to some directory in read/write mode and then edit the /etc/fstab.1. Boot Linux into single user modePress ESC in the grub menu and press ‘e’ to edit the grub entry. Add single to the kernel parameter like this:kernel /vmlinuz-2.6.32.21-166.fc12.i686 ro root=/dev/mapper/VolGroup-LogVol00 vga=792 singleThen press ‘b’ to boot Linux.2. Remount / in read/write mode# mount -n -o remount,rw /3. Edit /etc/fstabIf the above method doesn’t work, the second method can be used:Method 2: Add init=/bin/bash to kernel parameter ∞Addrw init=/bin/bashto kernel parameter. Linux will boot and we will get a bash prompt. The / is mounted in read/write mode. We can then edit /etc/fstab file and reboot.Related posts:How to Regenerate Grub2 Config Files on Linux How to Force Linux to Unmount a Filesystem Reporting "device is busy" Howto: Git Server over SSH How to Run a cron Job Every Two Weeks / Months / Days Unified Linux Login and Home Directory Using OpenLDAP and NFS/automount Making Chrome Accept Self-Signed Certificates on Linux Please share if you like this post:FacebookTwitterGoogle+RedditDiggStumbleUponMoreCategories Linux, TutorialTags Bash Eric Zhiqiang Ma Eric is interested in building high-performance and scalable distributed systems and related technologies. The views or opinions expressed here are solely Eric's own and do not necessarily represent those of any third parties. All 334 posts by Eric Zhiqiang Ma Previous Post:Changing Linux User’s Password in One Command LineNext Post:Favorite Sayings by John Ousterhout - Precious Experience and Advice for Building Systems 4 comments: Lang Nguyen says: Jul 2, 2015 at 6:50 pm good man,thanks you help full to meLangReply hamza says: Jul 31, 2015 at 6:37 pm You saved my time. Thanks a lot.Reply Colin Quek says: Apr 29, 2016 at 6:22 pm Thanks mate, this really helped. I screwed up my fstab a