Installing Linux on Oracle Virtualbox – CentOS 6

First perform these steps – Installing Linux on Oracle Virtualbox – Basic Setup

Insert the media for CentOS 6 then start the virtual machine

Choose Install or upgrade an existing system

Skip media test

Click Next

Choose a language

Choose your keyboard

Choose basic storage. The other option is to use SAN LUN devices

Yes, discard any data

Set a hostname and then click Configure Network

Edit both network interfaces

Click on Connect Automatically

Choose nearest city to calculate the time

Set root password

Replace existing system

Write changes to disk

Install a minimal server. You can install additional software later

Then reboot