Verify your downloads
netinst.iso image for a minimal boot CD or USB flash drive. Write the image to the appropriate physical media to create bootable media. The boot media contains no packages but must be pointed at a hard disk or online repository to complete the installation.
vmlinuz kernel file and the initrd.img ramdisk image from the distribution's isolinux/ directory. Configure your operating system to boot the kernel and load the ramdisk image. For further information on installation without media, refer to Chapter 12, Installing Without Media.