login as: root
root@nas's password:
root@NAS:~# uname -a
Linux NAS 2.6.31.8 #2 Fri Aug 5 14:28:08 JST 2011 armv5tel GNU/Linux
root@NAS:~#

root@NAS:~# fdisk /dev/sda

The number of cylinders for this disk is set to 364801.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
   (e.g., DOS FDISK, OS/2 FDISK)

Command (m for help): p

Disk /dev/sda: 3000.5 GB, 3000592982016 bytes
255 heads, 63 sectors/track, 364801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks  Id System
/dev/sda1               1      267350  2147483647+ ee EFI GPT

Command (m for help):

root@NAS:~# parted /dev/sda
GNU Parted 1.8.8
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) p
Model: WDC WD30EZRS-00J99B0 (scsi)
Disk /dev/sda: 3001GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End     Size    File system  Name     Flags
1      1049kB  1026MB  1024MB  ext3         primary
2      1026MB  6146MB  5120MB  ext3         primary
3      6146MB  6147MB  1049kB               primary
4      6147MB  6148MB  1049kB               primary
5      6148MB  7172MB  1024MB  linux-swap   primary
6      7172MB  2992GB  2985GB  xfs          primary

(parted)