1    /ALL

    Validates all the PFN lists: bad, free, modified, untested,
    zeroed free pages, and private pages.

2    /BAD

    Validates the bad page list.

3    /FREE

    Validates the free page list.

4    /MODIFIED

    Validates the modified page list.

5    /PRIVATE

    Validates all private page lists.

6    /UNTESTED

    Validates the untested page list that was set up for deferred
    memory testing.

7    /ZERO

    Validates the zeroed free page list.