Workaround Invalid CD Error During Ubuntu Server Install

I got an Invalid CD-ROM error during install from my LiveISO-USB, so I selected Execute a shell.

I created folder to mount my LiveISO-USB and mount it:

mkdir /liveusb
mount -o ro /dev/sda1 /liveusb

Mount the Ubuntu Server ISO to /cdrom:

mount -o loop /liveusb/boot/iso/ubuntu-14.04.1-server-amd64.iso /cdrom
exit

The installer continues for a bit, and gets stuck again.

I had to skip to Install GRUB... to complete the installation.

On reboot, I created folder to mount my LiveISO-USB and mount it again:

sudo mkdir /liveusb
sudo mount -o ro /dev/sda1 /liveusb

Mount the Ubuntu Server ISO to /media/cdrom this time:

sudo mount -o loop /liveusb/boot/iso/ubuntu-14.04.1-server-amd64.iso /media/cdrom

Install the rest of the missing packages:

sudo apt-get install ubuntu-standard openssh-server curl

Update my apt sources.list:

curl -O http://www.johnko.ca/scripts/sources14.04.1.list
sudo bash -c 'cat ~/sources14.04.1.list > /etc/apt/sources.list'

Update my packages:

sudo apt-get update
sudo apt-get dist-upgrade

And reboot for good measure:

sudo reboot