t block where its
contents is stored and the beginning of its contents in the rest of the block.</p>

    <p>If all contents can fit into one block the address of the next block will be
empty.</p>

    <p>Structure:</p>

    <pre><code> 0
 0 1 2 3 4 5 6 7 8      n
+-+-+-+-+-+-+-+-+-+ // +-+
| addr  | contents       |
+-+-+-+-+-+-+-+-+-+ // +-+

n = 512
</code></pre>

    <h3>Dir</h3>

    <p>The first block of a directory contains the address of the next block where its
directory entries are stored and the 