How do I restore etc fstab file in Linux?

Recreating /etc/fstab file via Recovery mode Boot into Recovery mode and then drop to root shell. From the sudo blkid output, identify your root ext4 partition and note down its corresponding UUID. Exit from the root shell and boot your Ubuntu OS, it will surely bootup.

How do I fix fstab error?

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. Then press ‘b’ to boot Linux.

How do I edit etc fstab in recovery mode?

3 Answers

1. Shutdown the computer.
2. Boot into Recovery Mode –After BIOS load, hold down Shift key to access the grub menu –Once in grub menu, select the entry ending in “(recovery mode)”
3. From the next menu selected option to enter Root Session.

How do I delete an entry in etc fstab?

1 Answer

1. Mount the root filesystem as read-write, then mount the /var and /usr filesystems (this will allow you to run vi or any other editor of your choice) # mount -uw / # mount /var # mount /usr.
2. Once those are mounted, edit /etc/fstab and remove the offending line.
3. Reboot. # reboot.

How do I modify fstab?

To edit the fstab file, launch your text editor of choice with sudo. To write a comment, use “#” at the start. Note that some entries may use the device UUID instead of a device name. To get the UUID of a device, use blkid.

How do I open etc fstab?

fstab file is stored under the /etc directory. /etc/fstab file is a simple column based configuration file where configurations are stored as column based. We can open fstab with the text editors like nano , vim , Gnome Text Editor , Kwrite etc.

How do I recover a read only file system?

1. Find out the USB pen drive directory by df -Th.
2. Unmount USB pen drive by umount command.
3. Then, run dosfsck command to check and repair filesystem.
4. After that, you can remove the USB pen drive from system and the re-attach it back to the system. Now, your USB pen drive should be writable.

Can we edit etc MTAB?

File /etc/mtab is maintained by the operating system. Don’t edit it.

How do I access etc fstab?

Where is the etc fstab file?

/etc directory
fstab is a system configuration file on Linux and other Unix-like operating systems that contains information about major filesystems on the system. It takes its name from file systems table, and it is located in the /etc directory.

What is default in etc fstab?

defaults – default mount settings (equivalent to rw,suid,dev,exec,auto,nouser,async). suid – allow the operation of suid, and sgid bits. They are mostly used to allow users on a computer system to execute binary executables with temporarily elevated privileges in order to perform a specific task.