Hi guys,
I have a Western Digital 500GB MyBook external hard drive.
Few days ago I created a folder in the root of the hard drive and I put all the MyBook original folders/files (For example: ArcDeviceInfo, autorun.inf, $RECYCLE.BIN, System Volume Information...etc) in the folder that I created. After that, everytime when I plugged the hard drive USB to my Mac and the hard drive start with normal sound and then it make 6 louder clicking sound and the hard drive stopped. The Hard drive volume didn't show up on my desktop so I open the Disk Utility app. In Disk Utility, I saw my hard drive icon but the name changed to "2 TB WD External Media" (my hard drive is 500GB, now became 2TB).

There is no way that I can enter my hard drive because it disappear, I cannot access the hard drive from my computer. I tried to partition the drive (just to see if the computer recognize it but it said Resource busy. I think the main problem is I put all the MyBook startup files into a new folder that I created and now the hard drive doesn't recognize it.
Can someone please tell me what should I do? Any suggestion? I know go to a professional to recover all the files is an option, but that will cost me $900 - $2900 (they gave me the quote online).
I hope someone can help me with this. Thank you very much for reading this.