Bare metal install of CoreOS

A physical server set up in accordance with our recommended specifications and fully working internet connection: Davra Platform Sizing guidelines

Download the latest stable ISO file from the CoreOS website: https://coreos.com/os/docs/latest/booting-with-iso.html
Burn above ISO file to CD/DVD.
Save our applicance.txt file to a USB stick. Please note that you can add your own SSH keys to this config file.
Configure the machine's boot settings to boot from CD/DVD.
Boot the machine from the CoreOS disk.
Run sudo su to become root.
Run dhcpcd to obtain an IP address over DHCP. If static network configuration is required, please follow our documentation for static network configuration.
Run ping google.com to verify internet access and working DNS server.
Create a mount point for your USB device, e.g. mkdir /mnt/sdb1
Mount your USB stick (e.g. with mount /dev/sdb1 /mnt/sdb1, please run fdisk -l to find your own device name).
Run the CoreOS installer pointing the install to the relevant disk, e.g. coreos-install -d /dev/sda -c /mnt/sdb1/appliance.txt
Let the installer complete and do a reboot with the reboot command.