Super block - General configuration of partiton

  Name of the volume (partition)

  Partition size.

  Inode table size.  - Once set, cannot be 'live' changed.
    Inode table size based on number of blocks partition holds.

    To resize :
      Use tar or other archiving utilities to backup.
      Re-partion and restore.
 
  Size of data units (blocks or clusters).
    512 byte sector block results in too many inode entries if partion large.

    Block set as  a 'cluster' of sectors, may be 1K, 2K, 4K, etc.

    Block size determined at creation time and fixed for each partition.
      Use large blocks if large files stored (movies, etc) 
        or partition is large.

      Use small blocks if files small (lots of scripts) 
        or partition is small (< 8GB)
  
  Info used to translate block ids to chs or LBA @

  Dirty flag - used to indicate whether superblock has been modified.

  Data about available blocks. (modern systems, separated from superblock
    and kept with portion of inode table for each cylinder group.)

    Number of free blocks.
 
    Lists available free data blocks.

    Index to next free block.

    Index to next free inode entry.
      Unlike FAT, the inode's position in inode table has no relation
      to block[s] it is tracking.