I am working on a new desktop computer for a friend. The drive is a 1TB SSD and the setup is as below.
I want to have 2 drives of a similar size (C: & D:), just to separate any files that the user creates away from the C: Drive.
There is already a D: Drive that contains OEM software and drivers and I thought I could extend that.
I shrunk the C: Drive successfully and then tried to extend the D: Drive, however the option to extend was greyed out.
I could create a new drive using the space I created by shrinking the C: drive and move the OEM files to the new drive, however I am left with 1.89GB of wasted space.
What is stopping me from extending the existing D: drive?

