Most of what shouldn’t be there came about after a couple of Windows re-installs at version 1803. The pc is a Dell XPS 2720 16GB, 2TB HDD, 32GB mSata SSD (caching with Intel Rapid Storage Technology). Delivered new in early 2014 with windows 8 Pro, currently up to date 20H2.
The final re-install required a setting change in BIOS config from RAID to AHCI and Intel RST software was never re-installed. That’s my next project but I bring it up so we don’t remove anything that may be related to the not obvious SSD. The New Volume (D:) partition I don’t understand at all. Should I see the SSD in Disk Management views?
Other questions are;
Does changing partitions affect image backups?
Should Bitlocker be turned off during changes?
Where do we start?
Attached are two views of HDD and XPS storage specs