Trying to recover an external drive's partitions that were accidentally messed up by a boot drive creator program (WinToFlash) and would like advice on how to proceed. Details as follows.
- Western Digital 3TB My Passport
- 2 Partitions: (1) NTFS, (1) EXT4 (LUKS)
In the process of attempting to reformat the drive to turn it into a boot drive, a stupid mistake on my part, WinToFlash halted the process with an error. I can't remember the error message unfortunately, but the error occurred before the actual writing began.
This resulted in the partitions showing up as RAW/unallocated in the Disk Management. The NTFS partition is now RAW while the LUKS partition is "unallocated". For some reason Disk Management shows 3 partitions, and unless it's actually storage space I just never allocated, I'm not sure why that is.

However in TestDisk, 2 partitions are discovered:

The LUKS partition is currently unrecognized by Linux. Yet TestDisk indicates: LUKS 1 (Data size unknown), 2097 KB / 2048 KiB.
I believe the first step would be to image the drive? The only way I see to get an image of the entire drive is to set the partition table type to None. If I select EFI GPT as TestDisk recommends I see the partitions and can image them individually. I would like to image the entire drive in case the recovery process goes wrong, but is imaging the individual partitions sufficient?
Out of curiosity, I used TestDisk on the MS Data partition and it was able to recover all files/folder structure on that partition. I ran PhotoRec on the LUKS Partition for a bit: it found 10/10 headers and began recovering.. something.

For the time being I've disconnected the drive to prevent any further complications. In my online investigation into how to restore a LUKS partition, people said the partition cannot be recovered without a backup of the LUKS header, which I unfortunately don't have as I created it before I knew to backup the header. Still, I'm hoping that the partition can be recovered as TestDisk is able to list it.
TestDisk/PhotoRec are being used on a Windows machine, and I have the necessary space to save an image of the drive.
I'm not too saavy with these programs, so any help will be greatly appreciated.