1 File System --------------------------------------------------

Name: SFTS (Simple File Table System)
Description: First simple fs uses 22-byte entries
Entry Size: 22 bytes
Entry Sections: 3 (FileName, LocSector, SizeInSector)
Padding: with zeros

Structure:

    Byte              Description
    ----------------------------------
    0-19              File name
    20                Starting sector
    21                Sectors count

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2 File System --------------------------------------------------

Name: SDFS (Simple Dynamic File System)
Based on: SFTS
Description: Simple fs with dynamic entries
Entry Size: dynamic
Entry Sections: 3 (FileName, LocSector, SizeInSector)
Padding: with zeros

Structure:

    Type              Description
    ------------------------------------------------
    string            File name (zero at the end)
    unsigned byte     Starting sector
    unsigned byte     Sectors count

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