External hard drive shows as local disk, not removable storage

Hello,

I desperately need some help here. I am having a problem with my 1TB Toshiba hard drive. I had it nearly half filled with files and now I have lost them. From what I have read, I am certain I should be able to recover them, but have had no luck. Here is the pertinent information as to where the problem lies. I ran Hitman Pro to take care of a virus on my laptop. I had the drive plugged in as Drive H. While Hitman was running, the external drive was disconnected. When I contacted Hitman support, they suggested the files were likely recoverable. I downloaded EaseUS data recovery to see if the files could be found. The program ran for a very long time with almost no progress being shown. However, before I disconnected the drive, it did show that some of drive H had been found. Unfortunately, this program was deleted and I downloaded Advanced Disk Recovery. It is not able to do anything as my external hard drive is now showing up as H, but under local disk rather than removable storage. The program only recognizes c as local disk. What can I do to recover my files and return the external disk to showing as removable storage on the laptop? I am afraid EaseUS may have started to find something and changed the partition which is why this program cannot find it now. Thanks.

PS Drive has been formatted since all of this, but not used in any other way since the initial problem. That is why I am confident the files should be recoverable (at least most of them).