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I am new to Ubuntu. I was restarting the system and got the following message:

error: file '/boot/grub/i386-pc/extcmd.mod' not found.
Entering rescue mode...
grub rescue>'

What do I do?

No Time
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Lasha Less
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  • Welcome to Ask Ubuntu! Refer to http://askubuntu.com/questions/197833/recovering-from-grub-rescue-crash – No Time Jul 27 '14 at 21:47

2 Answers2

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Oh dear it sounds like your grub boot loader is corrupt.

You can do the following to repair it.

  1. Boot from your installation CD choosing try ubuntu without installing.
  2. Open a terminal.
  3. enter the following commands:

BUT FIRST This assumes that your hard drive is showing as /dev/sda you may need to adjust. If you computer is under 10 years old and has only one hdd and your not running under a virtual machine then your hdd is probably lableled /dev/sda

These are the commands to reinstall the boot loader.

sudo mount /dev/sda1 /mnt sudo grub-install --boot-directory=/mnt /dev/sda sudo reboot

squareborg
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There's a simple way to solve grub problems: https://help.ubuntu.com/community/Boot-Repair You don't even need to edit any configs.

adjstts
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