I got a new SSD drive for my computer, and have installed Windows on this drive. This left an old Windows directory on my old normal drive. I am now attempting to delete this old Windows directory, but am getting blocked by security. If I crawl down into each subdirectory, I can manually change the ownership and access rights for each file, but if I attempt to do it from the root directory, I get a "Failed to enumerate objects in the container. Access is denied" error.

I have tried logging in as local Administrator, but this had the same effect.

I figure that I am missing something stupid, but I just can't determine what it is.