Manual steps to mount a new EBS volume to an existing EC2

addingEBStoEC2.txt

Note: Newer Linux kernels may rename your devices to /dev/xvdf through /dev/xvdp internally, even when the device name entered here (and shown in the details) is /dev/sdf through /dev/sdp.

cd /mnt
lsblk
sudo file -s /dev/xvdf  # if outputs 'data', it has to be formatted
sudo mkfs -t ext4 /dev/xvdf
sudo file -s /dev/xvdf
sudo cp /etc/fstab /etc/fstab.orig
sudo vi /etc/fstab
add this line:
  /dev/xvdf               /data   ext4    defaults,nofail         0       2  
sudo mount -a