I'm a little confused (not unusual) but I think you need to set the BIOS to boot from CD first. On my laptop (Sony Vaio) I press 'Esc' to access the BIOS but it may be different on other versions.
Surface Pro (2017) vs Surface Pro 4
20 groundbreaking 3D animation techniques
How to mine Bitcoin on Mac
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.