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Implementing Files

  1. Contiguous Allocation
    Files are stored in contiguous blocks on disk.
    Advantages: Efficient access and simple to manage.
    Disadvantages: Prone to fragmentation and requires complete allocation upfront.
  2. Linked List Allocation
    Files are stored in blocks linked via pointers.
    Advantages: Reduces fragmentation.
    Disadvantages: Slower access due to pointer following.
  3. Linked List Allocation using Table (File Allocation Table)
    Maintains a table in memory with pointers to file blocks.
    Advantages: Faster navigation.
    Disadvantages: Requires additional memory for the table.
  4. Inodes
    Each file has an inode that stores metadata, including pointers to file blocks.
    Advantages: Efficient space utilization and supports variable file sizes.
    Disadvantages: Requires complex management.

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