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Functions, Types, and File Systems of Major PC
OS’s |
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Store and Retrieve Data |
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Connect and Interoperate all PC Parts |
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Allow the user to |
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Store and Retrieve Data (File System) |
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Run Programs |
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Use input and output devices (printers,
scanners, CD’s, etc.) |
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Provides hierarchical structure to disk |
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Normally integrated into operating system |
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Popular file systems include |
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FAT |
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NTFS |
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HPFS |
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16 vs 32 Bit FAT |
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Linux |
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OS’s not limited to one File system |
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Master Boot Sector |
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Volume Boot Record |
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Root Directory |
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File Allocation Tables (FAT) |
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Clusters |
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Diagnostic Read Write Cylinder |
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Divides disk into logical storage devices |
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Must have at least one partition |
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Up to 4 partitions on a FAT drive |
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Up to 20 logical drives |
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DOS FDISK Command |
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Menu driven partitioning software |
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Windows NT Disk Administrator |
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Graphical interface partitioning software |
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Partition Magic |
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“On the fly” disk partitioning |
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Use the DOS FORMAT command |
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In Windows Explorer, right click disk or
partition and choose “FORMAT” |
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In Windows NT Disk Administrator, right click
drive or partition and choose “FORMAT” |
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Software interface between user and computer |
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Two major categories |
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Command Drive |
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GUI (Graphical User Interface) |
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Many are available |
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Windows and Mac OS two most popular |
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Windows world’s most popular OS |
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Attaches to ROM BIOS |
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Serves as a buffer between BIOS and application
software |
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Acts as User Interface (UI) to user |
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Are specialized for roles |
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Graphics/multimedia |
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Networking |
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Home use |
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DOS |
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Windows (3.1, 95, 98, NT, 2000, ME, XP) |
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Apple OS (8.5, 8.6, etc…) |
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Linux/Unix (Caldera, RedHat, BSD, etc...) |
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Amiga |
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BeOS |
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Command based OS |
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Two major components |
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Input/Output system |
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Shell |
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Major files |
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IO.SYS |
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COMMAND.COM |
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MSDOS.SYS |
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GUI (Graphical User Interface) |
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Used with mouse (point and click) |
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32 bit operating system |
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Plug and Play |
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Three versions of Windows 95 |
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Version “A” |
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Version “B” OSR 2 |
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Version “C” |
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Freely distributed version of UNIX |
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Open source code (GNU) |
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Growing in popularity |
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Has many Windows features |
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Both command based and GUI based (X Windows) |
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Notes
