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How To Fix “Grub Rescue” and Uninstall Ubuntu

Ubuntu 9

In this article, we will be discussing how to fix the “Grub Rescue” error and uninstall Ubuntu. This error often appears when the Grub bootloader encounters an error, usually due to a misconfigured system or a failed Ubuntu installation.

Quick Answer

To fix the "Grub Rescue" error, you will need a Windows 7 installation CD or a bootable USB drive. Boot from the installation disk, open the command prompt, and enter the commands "bootrec.exe/fixmbr" and "bootrec.exe/fixboot". Restart your computer and you should be able to boot into Windows. To uninstall Ubuntu, open Disk Management in Windows, delete the Ubuntu partitions, and extend the Windows partition to use the freed space.

What is Grub Rescue?

Grub Rescue is a built-in feature of the Grub bootloader, which is commonly used by Ubuntu and other Linux distributions. This feature is designed to help you troubleshoot and fix problems with the bootloader and your system’s boot process.

How to Fix Grub Rescue

To fix the Grub Rescue error, you will need a Windows 7 installation CD or a bootable USB drive. If you don’t have a Windows installation disk, you can use a boot-repair-disk.

Step 1: Boot from the Installation Disk

Insert the Windows 7 installation CD or bootable USB drive into your computer and restart it. Your computer should boot from the installation disk. If it doesn’t, you may need to change your BIOS settings to boot from the CD or USB drive.

Step 2: Open the Command Prompt

Once you have booted into the Windows installation or boot-repair-disk, look for the repair option. From there, navigate to the “command prompt” option.

Step 3: Enter the Commands

In the command prompt, enter the following commands one by one and press Enter after each command:

  • bootrec.exe/fixmbr
  • bootrec.exe/fixboot

The bootrec.exe/fixmbr command is used to repair the Master Boot Record (MBR), which is a special type of boot sector at the very beginning of the partitioned computer storage devices like hard disks.

The bootrec.exe/fixboot command is used to write a new boot sector onto the system partition. This command is useful when the boot sector has been replaced with a non-standard Windows 7 boot sector.

Step 4: Boot into Windows

After running these commands, restart your computer. You should now be able to boot into Windows.

If the above steps don’t work, you can try using a Linux installation CD/DVD or USB drive to live boot into Linux. Follow the steps shown on the Boot-Repair page to restore the boot menu. This should help you boot into Windows.

How to Uninstall Ubuntu

Once you have successfully booted into Windows, you can proceed with uninstalling Ubuntu. This can be done by deleting the Ubuntu partitions using the Disk Management tool in Windows.

Step 1: Open Disk Management

In Windows, press the Windows key + X and select Disk Management from the menu.

Step 2: Delete the Ubuntu Partition

Find the Ubuntu partitions (usually the ones with the largest size), right-click on them, and select “Delete Volume”. This will erase all data on the partition, so make sure you have backed up any important data beforehand.

Step 3: Extend the Windows Partition

After deleting the Ubuntu partitions, you can extend the Windows partition to use the newly freed space. Right-click on the Windows partition and select “Extend Volume”.

Remember, these steps are provided as general guidance and may vary depending on your specific system configuration. Always consult official documentation or seek assistance from a professional if you are unsure about any step.

Conclusion

In this article, we have discussed how to fix the “Grub Rescue” error and uninstall Ubuntu. We hope this guide has been helpful to you. If you have further questions or need more assistance, don’t hesitate to seek professional help.

What causes the “Grub Rescue” error?

The "Grub Rescue" error is typically caused by a misconfigured system or a failed Ubuntu installation. It occurs when the Grub bootloader encounters an error during the boot process.

Can I fix the “Grub Rescue” error without a Windows installation CD?

Yes, if you don’t have a Windows installation CD, you can use a boot-repair-disk. This disk contains tools that can help fix the Grub Rescue error and restore your system’s boot process.

What does the “bootrec.exe/fixmbr” command do?

The "bootrec.exe/fixmbr" command is used to repair the Master Boot Record (MBR). The MBR is a special type of boot sector at the very beginning of the partitioned computer storage devices like hard disks. This command helps fix issues related to the MBR.

How do I uninstall Ubuntu?

To uninstall Ubuntu, you can use the Disk Management tool in Windows. Open Disk Management, find the Ubuntu partitions, and delete them. Then, extend the Windows partition to use the freed space. Make sure to back up any important data before deleting the Ubuntu partitions.

Can I use a Linux installation CD/DVD or USB drive to fix the “Grub Rescue” error?

Yes, if the Windows installation or boot-repair-disk doesn’t work, you can try using a Linux installation CD/DVD or USB drive to live boot into Linux. Follow the steps shown on the Boot-Repair page to restore the boot menu and potentially fix the "Grub Rescue" error.

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