Unpartitioned Portion of My Hard Drive?

Discussion in 'Archived Threads 2001-2004' started by Kevin_Graham, Nov 12, 2002.

  1. Kevin_Graham

    Kevin_Graham Stunt Coordinator

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    When I started to re-install XP last night it showed that my C: drive is partitioned with NTFS format. It also showed that I have 8mb of an unpartitioned area on my drive. Huh?? Is this an area XP sets aside for processing?
     
  2. Ted Lee

    Ted Lee Lead Actor

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    my hd (also running xp) is in a similar situation.

    i don't think any hard drive is ever *completely* formatted? i can't remember why though.

    also, i believe you can use certain utilities (like partition magic) to reclaim that space?
     
  3. Rob Gillespie

    Rob Gillespie Producer

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    I think it just comes down to the math involved with the number of cylinders. Anyway, 8mb is nothing, really.
     
  4. Wayne Bundrick

    Wayne Bundrick Cinematographer

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    I think it has something to do with the minimum size increment that can be made in the partition table. The next size up would be slightly bigger than the disk, so it can't be used. But like Rob said, it's just 8 megabytes, and if your drive is today's typical size then it's nothing compared to 40,000 or 60,000 megabytes. Don't worry about it.
     
  5. Ken Chan

    Ken Chan Producer

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    I'm guessing it's this: the master boot record (MBR), which contains the partition table, is always in its own cylinder, number 0. The first (or only) partition starts on cylinder 1.

    All modern drives are defined to have 63 sectors per track, and 255 tracks per cylinder, or sides. (This is a fiction of address translation; your drive does not have 128 platters.) 63 * 255 * 512 bytes/sector is about 8 MB.

    //Ken
     
  6. John_Berger

    John_Berger Cinematographer

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  7. John_Berger

    John_Berger Cinematographer

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    Found it!
    http://support.microsoft.com/default...b;en-us;225822
     
  8. Kevin_Graham

    Kevin_Graham Stunt Coordinator

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    John - Great find!
     
  9. Ted Lee

    Ted Lee Lead Actor

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    who da man? john da man!

    err...wait...yo-da....err...never mind. :b
     
  10. John_Berger

    John_Berger Cinematographer

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    [​IMG] [​IMG] [​IMG] [​IMG] [​IMG] [​IMG]
     
  11. Ken Chan

    Ken Chan Producer

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  12. Ken Chan

    Ken Chan Producer

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    On second thought, they might have reserved just the first track. In that case, never mind [​IMG]
    //Ken
     

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