run for desired diskparted /dev/sdx
creation of label depends wheter disk is bigger than 2TB choose between msdos or gptmklabel gpt
than format the partition, you can manually select size or use %mkpart primary ext4 0% 100%
last step is format partition table with mkfsmkfs.ext4 /dev/sdx
on Debian 8 live usecfdisk /dev/sdX