Hello Deshib, thanks for joining the Intel Community.
In order to help you on this issue it would be necessary to get the information from your system.
Please let me know the model number of your computer and also a system report. Please check the following link
Thank You for the response sylvia_intel.
I have managed to resolve. As the system partition had rebuilt onto the new 2TB drive, I booted off the 2TB and restored my data partition from backup and created a new array (raid 1) with another 2TB drive.