External HDD not recognized after accidental deletion of partition

[Ivan311]

EDIT: I now understand better what happened. I accidentally turned my external HDD (Seagate Momentus STL50LM02) into a recovery drive in Windows 8. While the process to undo this is to be found online, I'm stuck in that I cannot make my laptop detect the external HDD, as it does not even show up (when connected via USB) with the diskpart command, let alone in the Device Manager or the Disk Management.

Does this mean I made my external HDD unusable by turning it into an undetectable recovery drive?

 

[CompGee]

Do you want your data back?

 

[Ivan311]

Thanks for answering.

Not at all, I have it elsewhere. I'd just be happy to have a working external HDD again.

 

[CompGee]

Go into Disk Management, and take a screenshot of that, and post it on up here.

 

[Ivan311]

Here it is:

It used to show up as "G:" if I remember correctly.

As a side note, I've also tried multiple data recovery programs (to see if they could at least recognize/detect the drive) and other USB ports in this laptop and in a friend's, but the drive remains undetectable.

 

[CompGee]

Have you tried unplugging the drive completely and plugging it back in?

 

[Ivan311]

I have. I have also shut down the laptop and waited before restarting and replugging. Same result. The light turns on and stays on and the drive gets slightly warm, just as it did when it was working properly. But it isn't recognized, whether in my laptop or in my friend's. It's a month old drive.

I know now I shouldn't have turned it into a recovery drive, but I'm baffled as to why this made it undetectable.

 

[CompGee]

Okay. Try opening Command Prompt as Administrator, then typing diskpart and pressing Enter, then typing list disk and press Enter. Look for your drive.

 

[Ivan311]

Sadly, it cannot be detected there either. (Tried diskpart on two laptops.)