Software⏱️ 3 min read📅 2026-06-11

How to Fix: Error : no such partition, entering in grub rescue mode

Grub rescue mode error due to partition issue in Windows 10 with Ubuntu.

Quick Answer: Try booting from a live USB drive and repairing the GRUB configuration using the `grub-install` command.

📋 Table of Contents

  1. 🛑 Root Causes of the Error
  2. ✅ Best Solutions to Fix It
  3. ✨ Wrapping Up

The error 'no such partition, entering in grub rescue mode' is a common issue that affects users of dual-boot systems like Windows 10 and Ubuntu. It occurs when the GRUB bootloader fails to recognize the partition containing the Windows operating system during the boot process.

This frustration can be particularly challenging as it prevents users from accessing their operating system, leading to data loss and inconvenience.

🛑 Root Causes of the Error

  • The primary reason for this error is that the Windows partition may have been deleted or formatted accidentally during the update process. Additionally, if the GRUB bootloader's configuration file has become corrupted, it can also lead to this issue.
  • Another possible cause could be a misconfiguration of the GRUB bootloader, which might result in incorrect partition recognition.

✅ Best Solutions to Fix It

Reinstalling GRUB and Rebooting

  1. Step 1: Boot into the Ubuntu live CD/USB and open a terminal. Run the command `sudo grub-install /dev/sda` (replace `/dev/sda` with the actual device name of your hard drive). This will reinstall the GRUB bootloader.
  2. Step 2: Run the command `sudo update-grub` to regenerate the GRUB configuration file.
  3. Step 3: Restart the computer and enter the GRUB menu. Select the Windows entry to boot into Windows.

Creating a Bootable USB Drive for Windows

  1. Step 1: Create a bootable USB drive for Windows using a tool like Rufus or a similar software.
  2. Step 2: Insert the USB drive and restart the computer. Select the USB drive as the first boot device from the BIOS settings (or UEFI settings).
  3. Step 3: Press Enter to start the Windows installation process, which should now recognize the Windows partition correctly.

✨ Wrapping Up

If you encounter the 'no such partition' error during boot, try reinstalling GRUB or creating a bootable USB drive for Windows. If these methods fail, consider seeking further assistance from a professional IT technician to resolve the issue.

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