External Hard Drive only get 2tb out of 3

[ICantPickParts]

I was formatting my laptop, so i made a backup of it on my external hdd. And now im only able to use 2tb out of the 3? it says that the other 1tb is unallocated but i cant extend the volume.
http://prntscr.com/38b0ch
http://prntscr.com/38b0i5
http://prntscr.com/38b0lt

 

[Austin R]

https://www.youtube.com/watch?v=V2iJD0DYOmA

 

[ICantPickParts]

https://www.youtube.com/watch?v=V2iJD0DYOmA

if you look at screenshot 3 i cant click new sample volume, but thanks for the video.

 

[kenrivers]

When you formatted the drive did you use MBR or GPT? There is a drive size limitation with MBR (2TB).
A thread on the topic: http://www.tomshardware.com/forum/268578-32-hard-drive-showing-control-panel
Instructions on how to convert to GPT: http://blog.lewan.com/2010/03/11/how-to-avoid-the-windows-mbr-disk-2tb-limit-by-using-gpt-type-disks/

 

[ICantPickParts]

When you formatted the drive did you use MBR or GPT? There is a drive size limitation with MBR (2TB).
A thread on the topic: http://www.tomshardware.com/forum/268578-32-hard-drive-showing-control-panel
Instructions on how to convert to GPT: http://blog.lewan.com/2010/03/11/how-to-avoid-the-windows-mbr-disk-2tb-limit-by-using-gpt-type-disks/

I would like to say that i found out how to do it with EASEUS Partition Master. it let me make the unused space into a new space then i was able to combine them.