In order to access the Installation Console, you need to manually set the IP address of your computer to 169.254.0.2.
You will need to open System Preferences, once there open Network
It would be a good idea to to edit the Locations so that you can easily change from DHCP to manual IP simply. You will need to go to Edit Locations… with in the Network Preference Pane.
Name it something that will let you remember what it is for.
Once you have named the new location you will click on the connection you want to set manually. In this example we will use Ethernet. From the Configure IPv4 drop down we will choose Manually.
Now we will add the IP Address, Subnet Mask, Router, DNS. In order to connect to the Installation Console enter these details:
- IP address: 169.254.0.2
- Subnet Mask: 255.255.0.0