Drive became Unallocated and not having much luck recoverying

Let the scan finish. I do not want to interrupt it. Once the scan finishes post a screenshot again. And then quit Test Disk. Power off your PC, disconnect that drive take it aside and keep it safely.

Your Toshiba disk in the enclosure is also 1 TB. Is it not? We shall examine that drive to ascertain whether that also shows 4096 bytes/sector size.

Also give me the history of the WD drive you just removed.

Did you format it ever? Wherefrom did it come? and things like that.

We need to go slowly. Atleast I need to.:)

The other drive in the enclosure is a Hitachi.
I do however, have a 1TB Toshiba internally attached.

The WD I bought from Amazon in 2013. Original one was faulty got a new replacement. This was initially installed internally and formatted there. It's possible that I set it up as the O/s drive at the time but I can't really remember.

I then bought a 2tb version and moved the 1tb to the external unit where it's been there ever since (at least 18months I'd guess). It's been a backup dive along with the Hitachi and only gets turned on when I need to get at the files or update my backups.

It's in warranty until 09/2018 as it's the Black model with 5 year.

HD sentinel reports this drive as completely healthy with no bad sectors. Smart data is all good from what I can see.

OK. I am at 69% scan - I can stop it as I don't think Testdisk will do anything to the drive unless I tell it to but for now I will do as you say and let it run.

Once I've got the screenshot I'll post it and disconnect the drive.

It was internally formatted. Do you remember whether you formatted it as an MBR drive or GPT drive?

jumanji said:

It was internally formatted. Do you remember whether you formatted it as an MBR drive or GPT drive?

Fairly sure it was MBR. I usually just do a quick format via the usual tool and presume the default is MBR. If it ended up GPT I wouldn't actively have chosen it.

Yep, the default will be MBR and if you had deliberately changed it to GPT you would remember it I suppose.

OK before you remove the drive from the PC, post a screenshot of how that drive looks like in Partition Wizard as well.( You had already posted the Windows Disk Management shot.)

jumanji said:

Yep, the default will be MBR and if you had deliberately changed it to GPT you would remember it I suppose.

OK before you remove the drive from the PC, post a screenshot of how that drive looks like in Partition Wizard as well.( You had already posted the Windows Disk Management shot.)

Yes I'd remember. I also checked my other drives and they are all MBR.

Nearly done on the Testdisk scan. 94%.

Do you want me to do a quick or full scan for Partition Wizard. I know that even the quick scan on PW took a long time but nothing shows on that - so I'm guessing it should be full.

No need to do a Quick Scan. Just post the first screen that shows when you launch PW. So you will be posting the TestDisk Screenshot after it finishes and the PW screenshot.Then switch off PC and disconnect that drive.

After disconnecting reboot, plug in your enclosure with only the 1TB Hitachi drive, run PW and post the screenshot to show how your Hitachi drive is seen.

Right click on its Partition > Properties > File System info. Post a screenshot. Close PW and wait for further instructions.

Got it.

Here's the shot before I reboot. Next will come in a few mins

.... and here we are with the hitachi external showing.

OK, you are using PW old version 8.1.1. If you install the new version it will show whether the drive is MBR or GPT in the Disk Map. Please install the newest version. That shouldn't take much time.

For now right click on the partition K: Hitachi K > Properties > File System info and tell me whether it is 512 or 4096. If in doubt post a screenshot.

I would prefer to see the screenshot taken with the latest version of PW.

I need to tell you again that it is going to be a slow process and in addition due to time zone difference we may need to take a break and continue only the next day. I have another two hours before I retire for the day. We shall do as much as we can in that time and thereafter continue tomorrow.

Your HDD is in good health and so no need to worry about time.