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Chapter 2. Performing the pre-customization tasks
2.1. Working with ISO images
In this section, you will learn how to:
- Extract a Red Hat ISO.
- Create a new boot image containing your customizations.
2.2. Downloading RH boot images
Before you begin to customize the installer, download the Red Hat-provided boot images. You can obtain Red Hat Enterprise Linux 9 boot media from the Red Hat Customer Portal after login to your account.
- Your account must have sufficient entitlements to download Red Hat Enterprise Linux 9 images.
-
You must download either the
Binary DVDorBoot ISOimage and can use any of the image variants (Server or ComputeNode). -
You cannot customize the installer using the other available downloads, such as the KVM Guest Image or Supplementary DVD; other available downloads, such as the
KVM Guest ImageorSupplementary DVD.
For more information about the Binary DVD and Boot ISO downloads, see Product Downloads.
2.3. Extracting Red Hat Enterprise Linux boot images
Perform the following procedure to extract the contents of a boot image.
Procedure
-
Ensure that the directory
/mnt/isoexists and nothing is currently mounted there. Mount the downloaded image.
# mount -t iso9660 -o loop path/to/image.iso /mnt/iso
Where path/to/image.iso is the path to the downloaded boot image.
Create a working directory where you want to place the contents of the ISO image.
$mkdir /tmp/ISOCopy all contents of the mounted image to your new working directory. Make sure to use the
-poption to preserve file and directory permissions and ownership.#cp -pRf /mnt/iso /tmp/ISOUnmount the image.
#umount /mnt/iso
Additional resources
- For more information about the Binary DVD and Boot ISO downloads, see Product Downloads.
