Kirk Douglas | Kirk Franklin | Kirk Hammett | Kirk Cameron | Kirk Whalum | James T. Kirk | Kirk | Kirk Ferentz | Hal McKusick | Mark Kirk | Marshall Kirk McKusick | Kirk Kerkorian | Kirk Gibson | Jennifer Kirk | Walt Kirk | Tommy Kirk | Rahsaan Roland Kirk | Kirk Watson | Kirk Snyder | Kirk Herbstreit | Kirk Fell | Russell Kirk Center for Cultural Renewal | Norman Kirk | Leonard Kirk | Kirk Talley | Kirk Radomski | Kirk Pearson | Kirk McCaskill | Kirk Fordice | Kirk Fordham |
Marshall Kirk McKusick, then a Berkeley graduate student, optimized the BSD 4.2's FFS (Fast File System) by inventing cylinder groups, which break the disk up into smaller chunks, with each group having its own inodes and data blocks.