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How To Fix “Error – Can’t Find Command hwmatch” in Grub2 on UEFI Machines

Ubuntu 7

In this article, we will delve into a common issue that users encounter while using Grub2 on UEFI machines – the “Error – Can’t Find Command hwmatch”. We will provide a detailed guide on how to fix this error, ensuring that you can continue to use your system smoothly.

Quick Answer

To fix the "Error – Can’t Find Command hwmatch" in Grub2 on UEFI machines, you can try modifying the GRUB configuration file or the GRUB script file. First, modify the /etc/default/grub file by adding the line GRUB_GFXPAYLOAD_LINUX=keep, then update the GRUB configuration using the command sudo update-grub. If that doesn’t work, you can try modifying the /etc/grub.d/10_linux file by commenting out the IF-THEN structure containing hwmatch. Remember to backup your files before making any changes and proceed with caution.

Understanding the Error

Before we jump into the solutions, let’s first understand what the error message “Can’t find command hwmatch” means. This error typically occurs during the boot process when GRUB (Grand Unified Bootloader), a boot loader package, fails to find the hwmatch command. This command is used for hardware matching, and its absence can lead to booting issues.

Precautions Before Proceeding

Before we start with the solutions, it’s important to take some precautions. Always backup any files you’re going to modify before making changes. This allows you to restore the original file if something goes wrong. Also, proceed with caution while editing system files.

Solution 1: Modify the GRUB Configuration File

The first solution involves modifying the /etc/default/grub file. Here are the steps:

  1. Open the terminal and type the following command to open the GRUB configuration file:
sudo nano /etc/default/grub

Here, sudo is used to execute the command with root privileges, nano is a command-line text editor, and /etc/default/grub is the GRUB configuration file.

  1. Add the following line to the file:
GRUB_GFXPAYLOAD_LINUX=keep

This line instructs GRUB to keep the current graphical settings for the Linux kernel.

  1. Save the file by pressing Ctrl+X, then Y, and finally Enter.
  2. Update the GRUB configuration by running the following command:
sudo update-grub

This command generates the final GRUB configuration file based on the settings in /etc/default/grub.

  1. Reboot your system and check if the error persists.

Solution 2: Modify the GRUB Script File

If the first solution doesn’t work, you can try modifying the /etc/grub.d/10_linux file. Here are the steps:

  1. Open the terminal and type the following command to open the GRUB script file:
sudo nano /etc/grub.d/10_linux
  1. Locate the section that contains the IF-THEN structure using hwmatch.
  2. Comment out the entire IF-THEN structure by adding a # character at the beginning of each line within the structure. This action effectively disables the code within the structure.
  3. Save the file by pressing Ctrl+X, then Y, and finally Enter.
  4. Update the GRUB configuration by running the following command:
sudo update-grub
  1. Reboot your system and check if the error persists.

Please note that this is a brute force fix and may not be the ideal solution, as it disables a specific condition in the code. Use it only if the first solution does not work for you.

Conclusion

In this article, we discussed two potential solutions to fix the “Error – Can’t Find Command hwmatch” in Grub2 on UEFI machines. We hope this guide was helpful and that you were able to resolve the error. Remember, always backup your files before making changes and proceed with caution. Happy computing!

What is GRUB?

GRUB (Grand Unified Bootloader) is a boot loader package commonly used on Linux systems. It is responsible for loading the operating system during the boot process.

How can I open the GRUB configuration file?

You can open the GRUB configuration file by opening the terminal and running the command sudo nano /etc/default/grub. This command opens the file using the nano text editor with root privileges.

How do I save changes made in the GRUB configuration file?

To save changes made in the GRUB configuration file using the nano text editor, press Ctrl+X to exit, then press Y to confirm the changes, and finally press Enter to save the file.

How do I update the GRUB configuration?

To update the GRUB configuration after making changes, run the command sudo update-grub in the terminal. This command generates the final GRUB configuration file based on the settings in /etc/default/grub.

What should I do if the error persists after trying the provided solutions?

If the error persists after trying the provided solutions, it is recommended to seek further assistance from the Linux community or consult with a knowledgeable professional. They may be able to provide more specific guidance based on your system configuration and the nature of the error.

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