ISO2USB is a handy utility for users who want to create bootable USB drives for CentOS or RedHat 5.X. You can create the bootable CentOS or RedHat USB drive by using your install CD or ISO image file.
You can then use the USB stick to perform installations on computers which do not have optical drives. ISO2USB also supports custom installations disks.
The bootable USB drive can perform the full install and does not require network support.