Only 2T for using after I fdisk the disk

I have a 4T disk:

Disk /dev/sdc: 4000.8 GB, 4000787030016 bytes
255 heads, 63 sectors/track, 486401 cylinders, total 7814037168 sectors
Units = section 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

After I use fdisk for partitioned to 2 parts. but I only get 2T for using.

I only get 2T for using:

/dev/sdc1       939G   72M  891G    1% /media/summer/sdc1
/dev/sdc2       1.1T   71M 1023G    1% /media/summer/sdc2

I am using CentOS 7.2 system.

EDIT-01

When I take partition:

Disk /dev/sdc: 4000.8 GB, 4000787030016 bytes
255 heads, 63 sectors/track, 486401 cylinders, total 7814037168 sectors
Units = sector 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 launch      start          end     blocks  Id  system

command(type m for help)： n
Partition type:
   p   primary (0 primary, 0 extended, 4 free)
   e   extended
Select (default p): p
part number (1-4，defualt 1)： 
will use default 1
start sector (2048-4294967295，default 2048)： 
will use default 2048
Last sector, +sector or +size{K,M,G} (2048-4294967294，default 4294967294)：

You see the total sectors are 7814037168, but when I take partition, the choice is 2048-4294967294.

You are using the old MBR partition table, which can't handle disks larger than 2TB. You have to create a GUID Partition Table (GPT) to use the whole disk.

Additionally, older fdisk versions can't handle GPT, so you need a different fdisk tool.

Partitioning tools that support GPT:

• cfdisk
• parted
• fdisk with version v2.23 and newer
• gdisk

cfdisk is often already installed.