dynamic disc invalid

[r0bski]

I have a 3tb internal drive which I had to work hard to get my PC to recognize in the first place.

I have since re-installed windows 7 - the drive WAS working, but overnight it has stopped working.
When I go to disk management it says 'dynamic disc invalid'

I have tried a couple of partition tools, but because the drive is greater than 2gb, they do not work with the drive.

I was hoping to convert/repair the partition without losing the data.

Please advise

On initial install of the HDD on my previous OS (which was windows y - I re installed due to performance issues), I had to install the INTEL rapid Storage driver - which I have done this time.
I'm pretty sure after formatting - I had to change the disk to GPT

 

[ignatzatsonic]

Did you choose to have dynamic disks? Do you want or need dynamic disks?

If not, look here to get back to ordinary "basic" disks:

http://www.sevenforums.com/tutorials/26829-convert-dynamic-disk-basic-disk.html