The standard Linux partitioning tool, fdisk, does not support partition greater than 2TB. Instead, use the GNU parted tool. Note: The maximum partition size for the EXT3 file system is 8TB.
For older Linux distributions that do not include parted, the software can be downloaded here:
http://www.gnu.org/software/parted/
Here is a sample session:
# parted /dev/sda
(parted)mklabel gpt
(parted)p
The disk geometry for the disk array will be displayed. Here is a sample output:
Disk geometry for /dev/sda: 0.000-2622488.000 megabytes
(parted) mkpart Partition type? [primary]? File system type? [ext2]? ext3 Start? 0 End? 2622488
Note: The end value does not represent the number of cylinder. Rather, it represents the partition size in MB. This value is extracted in step #2.
Note: When running parted under Fedora Core 6 or higher, enter '100%' as the value for End.
(parted)q