Hard Drive Partition disappeared & not showing

[dk7]

I have partitioned the disk a year ago. C was for programs and OS and the large D for everything else. Everything worked fine until two days ago when D: disappeared. It contained all of my work and I cannot see it or access it.

On Nov 14 the computer updated with their latest patches but I still cannot see / access any files on D.

Is Microsoft going to solve the problem or do they expect to be sued first? Any solutions?

[HappyAndyK]

Open Disk Management.

Click Action tab and see if it helps.

Else right-click on the missing partion (it may be displayed without the drive letter) and select Change Drive letter and path.

Does any of this help?