Looks like <a href="http:&#x2F;&#x2F;ocw.mit.edu&#x2F;courses&#x2F;electrical-engineering-and-computer-science&#x2F;6-828-operating-system-engineering-fall-2012&#x2F;" rel="nofollow">http:&#x2F;&#x2F;ocw.mit.edu&#x2F;courses&#x2F;electrical-engineering-and-comput...</a> is accessible, but I&#x27;m not sure how much content is free.