New
#11
The 100% free space is not correct - Disk Management display on space usage is not correct for GPT set up disks like yours. A tool like the free MiniTool Partition Wizard would give you a correct report on that.
I still believe that 4.5 GB is likely a factory restore partition and is low hanging fruit for you to recover some valuabe disk real estate.
How about output from elevated (Admin) command prompt run of "reagentc /info"?