sudo lsblk # Lists all and confirm if the disk is attached to the vm

# Format the disk
# Assuming new disk is detected and named as /dev/sdb
# Uncomment if you want to format
# sudo mkfs.ext4 -m 0 -F -E lazy_itable_init=0,lazy_journal_init=0,discard /dev/sdb

# Going the mount the disk on blackhole
sudo mkdir -p /blackhole
sudo mount -o discard,defaults /dev/sdb /blackhole

# Set permissions
sudo chmod a+w /blackhole

# Update fstab + backup the old one
sudo cp /etc/fstab /etc/fstab.backup
echo UUID=`sudo blkid -s UUID -o value /dev/sdb` /blackhole ext4 discard,defaults,nofail 0 2 | sudo tee -a /etc/fstab