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#disk confirm
fdisk -l

#create partition
fdisk /dev/sdb
## n (new partition) -> p (primary) -> 1 (partition number) -> 2048 -> enter (default max) ->w (write)

#create file system
mkfs -t ext4 /dev/sdb1

#file format
mkfs.ext4 /dev/sdb

#mount for directory
cd /
mkdir data
chmod 777 data

#mount
mount -t ext4 /dev/sdb /data

#chk for uid
blkid
# ex> /dev/sdb: UUID="cfc7bdc7-e413-4ad1-80b3-8c21502256f9" TYPE="ext4"

#mount for auto
vi /etc/fstab
## addline at last
UUID=cfc7bdc7-e413-4ad1-80b3-8c21502256f9 /data                   ext4    defaults        1 2