Comment by simcop2387

That might not work given that the drive might have more than one platter. You'd probably want to know how many heads the drive has to determine how to stripe it in the most inconvenient way possible. I think going beginning to middle on a single platter and back for each file would be the best way to get the worst performance for each file. That'll make sure it has to seek for each subsequent block and it can't inadvertently get read-ahead since it has to back track all the time, and the separation should be far enough that it won't get it on the in order blocks either.

EDIT: Just realized that I don't think this can be done through normal means. I think it'd need a pathological FAT file system driver to do it, and you'd have to build the image ahead of time to do it.