If you have noticed in Disk Management, a part of your hard drive says Healthy (OEM partition), and occupies space in GBs, then it is normal. There is nothing to worry about except that part of the ...
Can anyone shed some light on whythe Ubuntu 18.04.1 installer can't see any partitions on the NVMe disc (so I can't add a new partition after the existing ones) but if I hit ctrl-alt-F2 to get to ...