Going to ask whiskey tango foxtrot on this Inq article:

Discussion in 'PC Hardware, Software and Displays' started by zsouthboy, Mar 9, 2004.

  1. zsouthboy

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    http://www.theinquirer.net/?article=14597

    This must be fake.

    Even drives with a lot of "safe" space (the extra space on a platter that is used for calibration of the heads, ecc data, etc) wouldn't have 2x or more than the usuable space... would it? (Re: 200 gig to 510 gig)
     
  2. Rodéric

    Rodéric a.k.a. Ingenu
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    It is correct, HDD have indeed hidden space.
     
  3. epicstruggle

    epicstruggle Passenger on Serenity
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    your joking right? i read that article earlier today, and thought, there goes the inq again. Wow, I must say thats interesting.

    later,
    epic
     
  4. Sxotty

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    80GB drive sooo tempting... must restrain...

    Hmm it seems to me that there must be some reason that there isn't already an open partition there, is it not reliable or something? Maybe your drive will explode in firey death or something.
     
  5. Razor04

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    My bet is that it is purely a manufacturing thing. Why make several different models with different numbers of platters and all if you can just make one and then program it to ignore that space that "shouldn't be sold"? In some cases this might make a lot of sense for the drive manufacturer and possibly even save them money as they don't have to stock as many models or change their manufacturing process (even slightly) for different models.
     
  6. zsouthboy

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    reliability of the drive will be compromised if this is the case.
     
  7. zsouthboy

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    No. Drives get more space by physically having more heads and platters... that itself isn't artificial. This "extra partition" business is using that extra non-data area of each platter that is for calibration, bad block control(the drive thinks that a block will go bad, it copies the data from it to the "extra" area, remaps that block, and marks the old as bad), etc.
     
  8. Sxotty

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    The Inquirer has follow ups on this story

    http://www.theinquirer.net/?article=14608
     
  9. pcchen

    pcchen Moderator
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    AFAIK, HDDs do have hidden space for "back-ups." Of course, it is not possible to show these hidden space via the said method. These space are used when the HDD encounter a unstable sector, and HDD will try to relocate this sector to a new place, in the hidden space.

    As for this story, the "corrupted paritition table" theory is the most possible explanation, IMO.
     
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