Crazy idea!? Run Lion on a 32GB SD card on 13" Air

Discussion in 'MacBook Air' started by HiFiGuy528, Jul 26, 2011.

  1. HiFiGuy528 macrumors 68000

    HiFiGuy528

    Joined:
    Jul 24, 2008
    #1
    I was thinking if you could run Lion on a SD card and have the entire 128gb or 256gb for media? Since the SD card sits flat on the side, it would be okay to leave in perminately?
     
  2. simsaladimbamba

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    Nov 28, 2010
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    located
    #2
    If you find a fast enough SD card, as SD cards are slower than HDDs, many much slower. And you don't need the speed of the SSD for media, for that the speed of an SD card would more than suffice.
     
  3. Obscurelight macrumors 6502

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    NYC
    #3
    Since the card sticks out halfway you are just a disaster waiting to happen ;)
     
  4. jomo25 macrumors regular

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    Jun 29, 2010
  5. BeachChair macrumors 6502a

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    Copenhagen, Denmark
    #5
    It's a crazy idea. Put the OS on the internal SSD and the media on the SD card if anything.
     
  6. petsk macrumors 6502

    petsk

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  7. TheRealDamager macrumors 65816

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    #7
    This...
     
  8. Krevnik macrumors 68040

    Krevnik

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    Sep 8, 2003
    #8
    Class 10 are only rated for 10MB/sec sequential write. HDDs (2.5" 7200RPM) are 5x better on average, and SSDs can be nearly 20x better. Sequential read is going to be much much better as well. That completely ignores the absolutely terrible random write of SD cards. An HDD's random write beats a Class 10 card's sequential write! Yikes.

    It'll do in a pinch (I use a flash drive for diagnostics), but you will lose a ton of perf, especially if you also have the SSD. The SD card is a good standby as a portable diagnostics drive, or to use with the ol' sneaker net.
     
  9. NutsNGum macrumors 68030

    NutsNGum

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  10. Obscurelight macrumors 6502

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    Jul 22, 2011
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    NYC
    #10
    Thanks for the informative post.
     
  11. rkheyfets macrumors regular

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    Dec 16, 2010
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    NYC
    #11
    Always run the Os form the SSD for optimum performance
     
  12. mac jones macrumors 68040

    Joined:
    Apr 6, 2006
    #12
    THis is not-a-good idea as the SD cards I have are dog slow.

    I've run off FW800, which is pretty good (USB works, but is kinda slow)

    Thunderbolt will be really good eh? :D
     
  13. CHSeifert macrumors 6502

    CHSeifert

    Joined:
    Dec 28, 2010
    Location:
    Copenhagen, Denmark - Scandinavia
    #13
    Yeahhh, you said it yourself - CRAZY STUPID MORONIC IDEA :)

    SD card readers are very slow, even slow compared to faster HDD and most certainly slower than SSD - even the slower 1.st generation SSD drives.

    OS always needs to be placed on the fastest drive possible, so Yeahhh your idea is pretty lame and naive ;)
     

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