I am trying to format a hard drive, sata hard drive in casing connected via usb to my laptop. i tried formating the disk and somehow i screwed up in the process. so i have been trying to format the hdd. 
i tried using disks in ubuntu where hard is detected but it shows in volume as unknown.
when i try to format the hard i get the following error

Error creating file system: Command-line `mkntfs -f -F -L "" "/dev/sdb"' exited with non-zero exit status 1:
stdout: `Cluster size has been automatically set to 4096 bytes.
Creating NTFS volume structures.
'
stderr: `/dev/sdb is entire device, not just one partition.
mkntfs forced anyway.
Error writing to /dev/sdb: Input/output error
Error writing non-resident attribute value.
add_attr_sd failed: Input/output error
Couldn't create root directory: Input/output error
Failed to fsync device /dev/sdb: Input/output error
Warning: Could not close /dev/sdb: Input/output error
' (udisks-error-quark, 0)

i tried using gparted too.. 
since i am quite in experienced can someone pls guide me here..