Disk Dynamic Invalid back to Basic with data loss help

Hi,

Not sute what happend but just noticed that one of my 1TB disks cannot be seen in Win10 1709 Exp. It shows as Dynamic Invalid.

I have to parts that I nhave much data in. Is is full of audio files and the other of dp\ocs and p0ds etc.

I have used cgisecurity Windows TestDisk 7.1 and it shows all is stil there.

No sure now about how to back up before hitting the chnage to Basic button.

This is the acreen now.

How to get backup of data please?

oz

Well have worked it out and backed up both dirs I ndeed.

The first backup was fine and I got all the dirs and files and was able to access them on another drive thru explore.

The second backup copied all the firs over but I can't get access to them as I get a..
'You don't have permission, click Contibue to get acess.
When I do this I get..
You have been denied permission to access this folder. You ned to use the Security Tab.
Did that but saw a NULL SID with no Permissions.
See SYSTEM, Me as User, Admin.. all with full permissions.

I see thetotal data in the new copied dir is onlu 1.26GB which would be the dirs alone.
With files this should be 2/300 GBs.

Any help please?

Well after messing around a bit went inro Share in Properties then reshared the drive with 'Everyone'. As I am it's onlu user this was fine.
Worked and now I see and play all files etc.