Trouble Shooting External Drive

[ABunchaHerbs]

I recently backed up my entire of my laptops drive up to my 1TB external hard drive. However, i decided i didn't want a backup so i went into the windows (D:) folder and just deleted everything and put some other things on there. There is also another drive called Local Disk (E:) but i cannot view that as a pop up comes saying I don't have permission. The main thing is, I tried formatting the external drive but it still appears as a 256GB drive instead of 1TB. Anyone know how to fix? 

[D.U.F.F.]

Use Gparted -----> https://gparted.org/index.php
Make a new partition table (gpt or mbr)
Format the disk

[ABunchaHerbs]

On 11/17/2019 at 5:38 AM, D.U.F.F. said:

Use Gparted -----> https://gparted.org/index.php
Make a new partition table (gpt or mbr)
Format the disk

Thank you