Sage-Tips

How do I restore grub from live CD?

Recover Grub

1. Boot the Ubuntu Live CD.
2. Press Ctrl-Alt-F1.
3. Find the partition where your /boot directory is (normally the root partition) check the previous tip for that.
4. sudo mount /dev/sda1 /mnt.
5. sudo chroot /mnt.
6. grub.
7. find /boot/grub/stage1 (will output a partition name like (hd0,3) )
8. root (hd0,3)

How do I repair Ubuntu from live CD?

The graphical way

1. Insert your Ubuntu CD, reboot your computer and set it to boot from CD in the BIOS and boot into a live session. You can also use a LiveUSB if you have created one in the past.
2. Install and run Boot-Repair.
3. Click “Recommended Repair”.
4. Now reboot your system. The usual GRUB boot menu should appear.

How do I repair a corrupted hard drive in Linux?

Fix Hard Disk Bad Sectors in Linux

1. Download Ubuntu ISO and burn it on CD, DVD or a USB drive.
2. Boot system with the CD or USB created in step-1.
3. Open a terminal window.
4. Run command fdisk -l to find out the hard drive and partition device names.
5. Type following command to run fix bad sectors application.

How can I run Linux with a live DVD?

One incredibly useful way that Linux has been adapted to the needs of modern computer users is as a “live CD,” a version of the operating system that can be booted from a CD (or a DVD or, in some cases, a USB drive) without actually being installed on the computer’s hard drive.

How do you recover grub in Linux?

Steps to recover deleted GRUB bootloader in Linux:

1. Boot into Linux using Live CD or USB Drive.
2. Get into Live CD mode if available.
3. Launch Terminal.
4. Find Linux partition with working GRUB configuration.
5. Create temporary directory to mount Linux partition.
6. Mount Linux partition to the newly created temporary directory.

How do I boot Ubuntu as root?

Here’s how I boot into Ubuntu recovery mode and access the file system as root in write mode.

1. Hold ‘Shift’ while the machine is starting up to load up GNU GRUB.
2. Start up Ubuntu in recovery mode.
3. Choose “Drop To Root Shell Prompt’
4. By default, this will allow you to access the file system in read-only mode.

What program fixes corrupt hard drive partitions in Linux?

The easiest, and quickest way to fix a bad hard drive on Linux is by using a partition editor known as Gparted. With it, users can easily modify file systems, delete them, create new ones, and even fix issues they might have.

How do I check if a Linux drive is corrupted?

Run fsck on Linux Root Partition

1. To do so, power on or reboot your machine through the GUI or by using the terminal: sudo reboot.
2. Press and hold the shift key during boot-up.
3. Select Advanced options for Ubuntu.
4. Then, select the entry with (recovery mode) at the end.
5. Select fsck from the menu.

Can you boot Linux from DVD?

You need to boot the free Linux OS (operating system) from a CD or DVD when you want to install Linux on a computer system – or when you want to run Linux from a Linux live CD / DVD. To boot Linux, just put a Linux CD or DVD in your drive and restart your system.

How do I make a bootable Linux CD?

This is super simple to do:

1. Go to the iso file you downloaded and right click on it to choose the burn to disc.
2. Insert an empty writable DVD disc into your DVD-RW drive.
3. Click burn to unpack the iso onto the DVD.
4. The disc will take a couple of minutes to complete.

Can I repair Ubuntu?

If you do see the GRUB boot menu, you can use the options in GRUB to help repair your system. Select the “Advanced options for Ubuntu” menu option by pressing your arrow keys and then press Enter. Use the arrow keys to select the “Ubuntu … (recovery mode)” option in the submenu and press Enter.

How to recover broken Ubuntu Linux system without reinstalling it?

Now let us see how to recover the broken Ubuntu Linux system, without reinstalling it. 1. First of all, try to login with live cd and backup your data in an external drive. Just in case, if this method didn’t work, you can still have your data and reinstall everything! 2. At the login screen, press CTRL+ALT+F1 to switch to tty1.

How do I run a disk check on a Linux system?

Open a terminal window and type the command sudo fsck.ext3 -f /dev/sda5 to perform a disk check (assuming that Ubuntu is installed alongside Windows on your hard disk in the standard configuration). Once this has completed, close the terminal window and click System -> Administration -> Partition Editor.

How to check the Linux filesystem for errors and repair them?

For checking the Linux filesystem for errors, the fsck command comes in handy more than often. To check the error and repair it at the same time, use ‘a’option. Other than that, the ‘y’option can be used in place of ‘a’. $ fsck -a /dev/sdb1

How do I make a backup of my live Linux?

To accomplish that you will need to: 1 Download a Live Linux ISO and Burn it 2 Boot into the RAM disk based Live Linux CD environment 3 Mount the hard drive that contains the backup 4 Copy the backup off of the server