How To Install shim-x64 on CentOS 8

shim-x64 is First-stage UEFI bootloader

Introduction

In this tutorial we learn how to install shim-x64 on CentOS 8.

What is `shim-x64`

Initial UEFI bootloader that handles chaining to a trusted full bootloader under secure boot environments. This package contains the version signed by the UEFI signing service.

We can use yum or dnf to install shim-x64 on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install shim-x64.

Install shim-x64 on CentOS 8 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install shim-x64 using dnf by running the following command:

sudo dnf -y install shim-x64

Install shim-x64 on CentOS 8 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install shim-x64 using yum by running the following command:

sudo yum -y install shim-x64

How To Uninstall shim-x64 on CentOS 8

To uninstall only the shim-x64 package we can use the following command:

sudo dnf remove shim-x64

shim-x64 Package Contents on CentOS 8

/boot/efi/EFI/BOOT/BOOTX64.EFI
/boot/efi/EFI/BOOT/fbx64.efi
/boot/efi/EFI/centos/BOOTX64.CSV
/boot/efi/EFI/centos/mmx64.efi
/boot/efi/EFI/centos/shimx64-centos.efi
/boot/efi/EFI/centos/shimx64.efi

References

shim-x64 website

Summary

In this tutorial we learn how to install shim-x64 on CentOS 8 using yum and dnf.