add second Hard Drive

sudo fdisk -l

Disk /dev/sda: 250.0 GB, 250000000000 bytes

255 heads, 63 sectors/track, 30394 cylinders, total 488281250 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x0006e6f9

   Device Boot      Start         End      Blocks   Id  System

/dev/sda1            2048   471767039   235882496   83  Linux

/dev/sda2       471769086   488280063     8255489    5  Extended

/dev/sda5       471769088   488280063     8255488   82  Linux swap / Solaris

WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted.

Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes

255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 4096 bytes

I/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System

/dev/sdb1               1  3907029167  1953514583+  ee  GPT

Partition 1 does not start on physical sector boundary.

WARNING: GPT (GUID Partition Table) detected on '/dev/sdc'! The util fdisk doesn't support GPT. Use GNU Parted.

Disk /dev/sdc: 1000.2 GB, 1000204886016 bytes

255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00043ad3

   Device Boot      Start         End      Blocks   Id  System

/dev/sdc1               1  1953525167   976762583+  ee  GPT

Disk /dev/sdd: 2000.4 GB, 2000398934016 bytes

255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 4096 bytes

I/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk identifier: 0x00000000

Disk /dev/sdd doesn't contain a valid partition table

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sudo mkdir /data3

sudo chmod -R 777 /data3

sudo lsblk -f

NAME   FSTYPE LABEL MOUNTPOINT

sda

├─sda1 ext4         /

├─sda2

└─sda5 swap         [SWAP]

sdb

└─sdb1 ext4         /data

sdc

└─sdc1 ext4         /data2

sdd

sr0

sudo fdisk /dev/sdd

n   add a new partition

Command (m for help): n

Partition type:

   p   primary (0 primary, 0 extended, 4 free)

   e   extended

Select (default p): p

Partition number (1-4, default 1): 1

First sector (2048-3907029167, default 2048):

Using default value 2048

Last sector, +sectors or +size{K,M,G} (2048-3907029167, default 3907029167):

Using default value 3907029167

sudo mkfs.ext4 /dev/sdd1

sudo mount /dev/sdd1 /data3

sudo nano /etc/fstab

/dev/sdd1 /data3 ext4 defaults 0 0

sudo mount -a

df

touch /data3/test

cd /data3

ls -l

total 16

drwx------ 2 root root 16384 Jul  2 20:42 lost+found

-rw-r--r-- 1 root root     0 Jul  2 20:46 test

-------------------Additional Notes---------------------------