is this normal for external hard drives? (it says 750gb but only 690gb shows up)??

Discussion in 'Buying Tips and Advice' started by charlestrippy, Jun 30, 2007.

  1. charlestrippy macrumors 6502

    charlestrippy

    Joined:
    May 29, 2006
    Location:
    Tampa, Florida
    #1
    Hey - I just bought the Seagate Freeagent 750gb


    I formatted it to the Mac OS Extended Journaled but it says the total capacity is 698gb....

    I know hard drives aren't the exact number(size) as advertised but is it just me or does the loss of 50gb seem excessive?



    If i was to just "Erase" and click the button "Erase free space" and have it write zero's - would that free up a little more of the "lost" 50gb?

    or do you think the drive is faulty and I should return it?

    thanks! :confused:
     
  2. flopticalcube macrumors G4

    flopticalcube

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    In the velcro closure of America's Hat
    #2
    Thats normal. You lose some space in formatting as the files system needs to "organize" the space. My 120G drive is actually 111G usable space.
     
  3. charlestrippy thread starter macrumors 6502

    charlestrippy

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    May 29, 2006
    Location:
    Tampa, Florida
    #3
    yeah but doesn't 50gb seem like a lot?
     
  4. flopticalcube macrumors G4

    flopticalcube

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    #4
    Actually, its less as a percentage of the drive space than my 120G drive. So, no.
     
  5. darkcurse macrumors 6502a

    darkcurse

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    #5
    You typically lose about 10% of the "advertised" space every-time you format a drive. This happens mainly because of the differences in calculations that is used. Technically 1KB is not 1000 bytes but 1024 or 2^10 bytes so when you format the thing, it gives you the "actual" space minus all that is needed to store the "organising stuff" as floptical put it :)
     
  6. charlestrippy thread starter macrumors 6502

    charlestrippy

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    May 29, 2006
    Location:
    Tampa, Florida
    #6

    oh, okay - so everything is fine on the drive - considering that situation...
    there isn't a way to get more like "erase free space" or anything?

    well, at least i have 698gb to play with haha
     
  7. TBi macrumors 68030

    TBi

    Joined:
    Jul 26, 2005
    Location:
    Ireland
    #7
    You might think that but that's wrong. It's the 1024 thing instead.

    Basically 750GB on the box = 750,000,000,000 Bytes

    which gives 732,421,875 KBytes (K =1024Bytes)
    which gives 715,255.7 MBytes
    which gives 698.49 GBytes

    Which is what the OP is seeing!
     
  8. darkcurse macrumors 6502a

    darkcurse

    Joined:
    Nov 5, 2005
    Location:
    Sydney
    #8
    Nope, because that's really the free space that's available to you. There was a big issue a few years back where consumer's began complaining that they weren't getting the space that was "advertised" especially when drives started becoming bigger and bigger. I mean, 10% of 1GB ~ 100 megs right, doesn't seem that much. But 10% of 750GB ~ 75GB o_0 That's where people started going "hang on, what happened to my space" :p

    The more technically correct term for measuring space is KiB or kebibyte, MiB or mebibyte and GiB or gibibyte. Sounds cute I know but you can read it here

    And yeah, 690GB's of data is wicked man. I need to get me a bigger external HD as well:rolleyes: All them family guy episodes are taking up my precious space, not to mention all the anime :p
     
  9. charlestrippy thread starter macrumors 6502

    charlestrippy

    Joined:
    May 29, 2006
    Location:
    Tampa, Florida
    #9
    thanks for the help guys!
    wanted to make sure! haha

    now time to go fill the sucker up
     

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