Alternative Boot Methods; Making An Installation Boot Cd-Rom - Red Hat ENTREPRISE LINUX 5 Installation Manual

Your BIOS may need to be changed to allow booting from your DVD/CD-ROM drive. For more
information about changing your BIOS, refer to
x86, AMD64, and Intel® 64

2.4.1. Alternative Boot Methods

Boot DVD/CD-ROM
If you can boot using the DVD/CD-ROM drive, you can create your own CD-ROM to boot the
installation program. This may be useful, for example, if you are performing an installation over
a network or from a hard drive. Refer to
further instructions.
USB pen drive
If you cannot boot from the DVD/CD-ROM drive, but you can boot using a USB device, such as a
USB pen drive, the following alternative boot method is available:
To boot using a USB pen drive, use the dd command to copy the diskboot.img image file from
the /images/ directory on the DVD or CD-ROM #1. For example:
dd if=diskboot.img of=/dev/sda
Your BIOS must support booting from a USB device in order for this boot method to work.

2.4.2. Making an Installation Boot CD-ROM

isolinux (not available for Itanium systems) is used for booting the Red Hat Enterprise Linux
installation CD. To create your own CD-ROM to boot the installation program, use the following
instructions:
Copy the isolinux/ directory from the Red Hat Enterprise Linux DVD or CD #1 into a temporary
directory (referred to here as <path-to-workspace>) using the following command:
cp --r <path-to-cd>/isolinux/ <path-to-workspace>
Change directories to the <path-to-workspace> directory you have created:
cd <path-to-workspace>
Make sure the files you have copied have appropriate permissions:
chmod u+w isolinux/*
Finally, issue the following command to create the ISO image file:
mkisofs ­­o file.iso ­­b isolinux.bin ­­c boot.cat ­­no­emul­boot \
­boot­load­size 4 ­­boot­info­table ­­R ­­J ­­v ­­T isolinux/
Section 4.4.1, "Booting the Installation Program on
Systems".
Section 2.4.2, "Making an Installation Boot CD-ROM"
Alternative Boot Methods
for
7