Just noticed yesterday a new drive in Disk management, Don't know how
long it has been there but only since 1903.

It is called "portablebasedlayer" 8.00 GB NTFS healthy primary
partition, 400 MB used, it is *read only* and has no drive letter.

I can't do anything to it as all options are greyed out except property's.

It only shows up there and not in "this PC" . It does not seem to do
anything and not causing any problems, Just wondering how and why it got
there.

Rene