@ britbrat and jeffbb.........thank you for the further comments.
I do have that drive set as first in the boot order.
I use Acronis True Image to create regular images of my C drive, and incremental images as and when...and have used that program to create a boot disc.
That, and only that, would be used in an emegency.......hopefully it is clean, or at least if there is a nasty in it, well that nasty must already be in the source, but I think it is clean.
Thanks again.
