evon@evon-MS-7640:/media/evon/884C742D4C741860$ sudo fdisk -lu data2.img

Disk data2.img: 160.0 GB, 160000000000 bytes
255 heads, 63 sectors/track, 19452 cylinders, total 312500000 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: 0x00000000

Disk data2.img doesn't contain a valid partition table
evon@evon-MS-7640:/media/evon/884C742D4C741860$ sudo testdisk
TestDisk 6.14, Data Recovery Utility, July 2013
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org
evon@evon-MS-7640:/media/evon/884C742D4C741860$ kpartx
usage : kpartx [-a|-d|-l] [-v] wholedisk
	-a add partition devmappings
	-r devmappings will be readonly
	-d del partition devmappings
	-l list partitions devmappings that would be added by -a
	-p set device name-partition number delimiter
	-g force GUID partition table (GPT)
	-v verbose
	-s sync mode. Don't return until the partitions are created
evon@evon-MS-7640:/media/evon/884C742D4C741860$ sudo kpartx -av data2.raw
failed to stat() data2.raw
evon@evon-MS-7640:/media/evon/884C742D4C741860$ sudo kpartx -av data2.img
evon@evon-MS-7640:/media/evon/884C742D4C741860$