2.6. Preparing for a Hard Drive Installation
Hard drive installations only work from ext2, ext3, or FAT file systems. If you have a file system other than those listed here, such as reiserfs, you will not be able to perform a hard drive installation.
Hard drive installations require the use of the ISO (or DVD/CD-ROM) images. An ISO image is a file containing an exact copy of a DVD/CD-ROM image. After placing the required ISO images (the binary Red Hat Enterprise Linux DVD/CD-ROMs) in a directory, choose to install from the hard drive. You can then point the installation program at that directory to perform the installation.
Ensure that you have boot media available on CD, DVD, or a USB storage device such as a flash drive.
To prepare your system for a hard drive installation, you must set the system up in one of the following ways:
- Using a set of CD-ROMs, or a DVD — Create ISO image files from each installation CD-ROM, or from the DVD. For each CD-ROM (once for the DVD), execute the following command on a Linux system:
dd if=/dev/cdrom of=/tmp/file-name.iso
- Using ISO images — transfer these images to the system to be installed.Verifying that ISO images are intact before you attempt an installation, helps to avoid problems. To verify the ISO images are intact prior to performing an installation, use an
md5sumprograms are available for various operating systems). An
md5sumprogram should be available on the same Linux machine as the ISO images.
The Red Hat Enterprise Linux installation program has the ability to test the integrity of the installation media. It works with the CD / DVD, hard drive ISO, and NFS ISO installation methods. Red Hat recommends that you test all installation media before starting the installation process, and before reporting any installation-related bugs (many of the bugs reported are actually due to improperly-burned CDs). To use this test, type the following command at the
boot:prompt (prepend with
elilofor Itanium systems):
Additionally, if a file called
updates.imgexists in the location from which you install, it is used for updates to
anaconda, the installation program. Refer to the file
anacondaRPM package for detailed information on the various ways to install Red Hat Enterprise Linux, as well as how to apply the installation program updates.