Install Ubuntu Server 18.04 With RAID And Add Extra Disks 

This video is for Windows Users who want to install Ubuntu Server 18.04 with the Desktop GUI! 

In this video we show you how to install to a single disk with a ONE-CLICK method and also how to do custom partitions and use RAID 5. 

We also sho how to join a fresh disk to a running RAID 5 array. 

The Ubuntu Terminal Commands: 

sudo apt-get install ubuntu-desktop 
sudo mdadm -D /dev/md0 
sudo mdadm /dev/md0 --add /dev/sde 
sudo mdadm --grow --raid-devices=4 --backup-file=/boot/raid.bac /dev/md0 
sudo resize2fs /dev/md0 

Other GUI 

sudo apt-get install ubuntu-mate-core 
sudo apt-get install lubuntu-core 
sudo apt-get install xubuntu-core 
sudo apt-get install kubuntu-desktop