Converting RHEL 9.3 Cloud Image: UEFI to BIOS Booting Image Failure

Abstract: Learn how to troubleshoot and resolve issues when converting a RHEL 9.3 cloud image from UEFI to BIOS bootable system.

Created: 2024-07-18 by UserComp.com Editors

Converting RHEL 9.3 Cloud Image: UEFI/BIOS Booting Image Failure

In this article, we will discuss the process of converting a Red Hat Enterprise Linux (RHEL) 9.3 cloud image to make it bootable on a UEFI/BIOS system. We will cover the key concepts and provide detailed instructions to help you successfully complete the conversion.

Background

The user is trying to convert a custom RHEL 9.3 cloud installation image to run on a UEFI/BIOS system but is facing issues making the new image bootable. The main challenge is understanding the specific requirements for creating a bootable UEFI/BIOS image from a cloud image.

Requirements

To convert the custom RHEL 9.3 cloud installation image for UEFI/BIOS booting, you will need the following:

A RHEL 9.3 cloud image
A system with UEFI/BIOS firmware
Basic knowledge of Linux command line and disk management

Converting the RHEL 9.3 Cloud Image

First, download the RHEL 9.3 cloud image and prepare a disk image using a tool like QEMU or VirtualBox. For this example, we will use QEMU.

Step 1: Download the RHEL 9.3 Cloud Image

Download the RHEL 9.3 cloud image from the official Red Hat website.

Step 2: Prepare a Disk Image

Create a disk image using the following command:

$ qemu-img create -f qcow2 rhel9.3.qcow2 20G

Step 3: Convert the Cloud Image

Convert the cloud image to a format suitable for QEMU:

$ virt-convert --format qcow2 rhel-9.3-x86_64-kvm.qcow2 rhel9.3.qcow2

Creating a Bootable UEFI/BIOS Image

Now that you have a disk image, you need to make it bootable for UEFI/BIOS systems. We will use the bootloader grub2 to accomplish this.

Step 1: Install grub2

Install grub2 on your system:

$ sudo apt-get install grub2

Step 2: Install grub2 on the Disk Image

Install grub2 on the disk image:

$ sudo grub-install --force --target=x86_64-efi --boot-directory=/mnt/rhel9.3/boot/efi --efi-directory=/mnt/rhel9.3/boot/efi rhel9.3.qcow2

In this article, we have discussed the process of converting a RHEL 9.3 cloud image to make it bootable on a UEFI/BIOS system. By following the steps outlined above, you should be able to successfully create a bootable UEFI/BIOS image from the RHEL 9.3 cloud image.

References

Tags: RHEL Cloud Image UEFI BIOS Booting

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