Can you run bootcamp from an sdxc card?

Discussion in 'MacBook Pro' started by Dobbs2, May 2, 2013.

  1. Dobbs2 macrumors 6502

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    Jun 5, 2008
    #1
    I have a macbook pro and well I don't have much space left on my 1tb hdd. Would it be possible to run windows 8 or 7 from bootcamp using this card?

    http://www.bestbuy.com/site/SanDisk...31607004&skuId=4807118&st=64gb sdxc&cp=1&lp=7

    I have copies from my university of windows 7 and 8 and just picked up this sdxc card. My games that I play run better on windows. I was hoping this card was big enough and it was possible. Thanks for your time.
     
  2. Comeagain? macrumors 68020

    Comeagain?

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    #2
    Last time I tried, windows won't let you install it on an external drive. But Parallels will let you store the files on an external.
     
  3. johnnnw macrumors 65816

    johnnnw

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    #3
    Am I the only one thinking this will be wayyyy too slow for run an OS on?

    I'm thinking it is much too slow.
     
  4. jozeppy26 macrumors 6502

    jozeppy26

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    #4
    Maybe give this a shot?

    I have no idea if it matters whether your Mac uses the USB bus or PCIe bus to communicate with the SD slot
     
  5. Dobbs2 thread starter macrumors 6502

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    #5
    I maybe wrong but I thought a class 10 sdxc card was equivalent to a 5400 rpm hdd.

    ----------

    I've made bootable usbs in the past. I had a 32gb one that worked on windows machines. I guess I was just hoping this wouldn't be to bad.:p
     
  6. Freyqq macrumors 68040

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    Dec 13, 2004
    #6
    class 10 just means it is guaranteed to have 10 mb/s read/write speeds. However, some are faster than this. If it is, it'll likely say something on the box. For reference, a decent 5400 rpm hd has at least 60 mb/s read/write. An SSD has between 200-500 mb/s read/write.
     
  7. Dobbs2 thread starter macrumors 6502

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    #7
    The sdxc card I linked is the one I have it says 45mb/s. So it's close. :D
     
  8. Freyqq macrumors 68040

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    Dec 13, 2004
    #8
    Careful though. There could still be a bottleneck with the computer. Most sd card slots are connected internally by USB 2, which has a max speed of about 25 mb/s. If your computer has usb 3, there's chance it can handle the extra speed.
     
  9. jozeppy26, May 3, 2013
    Last edited: May 3, 2013

    jozeppy26 macrumors 6502

    jozeppy26

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    #9
    2011 and newer MacBooks don't use a USB bus to communicate with the SD card slot; they use PCIe.

    OP, you should totally buy this:
    http://www.lexar.com/products/lexar-professional-600x-sdxc-uhs-i-card?category=5286
     
  10. tengtengvn macrumors member

    tengtengvn

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    #10
  11. johnnnw macrumors 65816

    johnnnw

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    #11
    10mb/s is wayyyyyyy too slow to run an os on. You will pull your hair out. My old computers hard drive is old and very slow and it's 15 mb/s and it's painful how often its loading the simplest things.

    Definitely wouldn't recommend running bootcamp on a sd card.

    ----------

    That's not realistic. They say the highest possible, you won't get 45. Like the other guy said. It's likely to be 10-20.
     
  12. jozeppy26 macrumors 6502

    jozeppy26

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    #12
    Read the thread man, it wouldn't run that slow.
     
  13. yusukeaoki macrumors 68030

    yusukeaoki

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    Tokyo, Japan
    #13
    Bootcamp cant be installed on that but Parallels or VMware will.
    I have VMware running off of my optibay HDD and runs fine.
    I dont know how much r/w you get on the SD card but if its close to SATAII speed, you should be fine.
     
  14. ColdCase macrumors 68030

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    NH
    #14
    If you are used to snappy response, you will likely find hosting an OS on the SD card woefully inadequate.

    Using blackmagic as a benchmark tool and my 2013 rMPB I found the following;

    USB3 7200 rotational write 133MBps, read 135MBps
    SD Card (Sandisk Ultra) 10MBps write, 44.4MBps read
    USB3 SSD 215MBps write, 258 MBps read
    Internal SSD 440MBps write, 461 reads (including file vault encryption)
    USB3 5200 rotational 75MBps write, 84MBps read.
    USB2 rotational 35MBps write, 38MBps read.

    I run parallels with the widows OS on an external USB3 SSD without issue.
     
  15. jozeppy26 macrumors 6502

    jozeppy26

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    #15
    In regards to the 7200rpm vs 5400rpm drives, the speed difference is due to the capacity (and therefore density) of the drive. You can only compare read/write between the two rotational speeds if both drives have the same capacity. Just FYI.
     
  16. johnnnw macrumors 65816

    johnnnw

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    #16
    I read the thread. I never said it was impossible, but it will just kind of suck.

    Even if it was let's say 30 read/15 write, that's still not going to be fast enough.

    If you're used to speed, it will feel extremely bad.
     
  17. jozeppy26 macrumors 6502

    jozeppy26

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    #17
    He should just buy the extreme pro SD that writes at 95 for $999.
     
  18. ColdCase macrumors 68030

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    #18
    Perhaps a misnomer, sorry. They were all 1TB drives but of different performance category, perhaps different controllers. I shorthanded the description. HD performance much more complicated. I evaluate them for a living.

    These data points just provide some real world reference for the amateurs among us; between a high performance drive, lower performance drives and the SD card reader.

    Folks are saying the SD reader is off the PCI bus... but its slow regardless.
     
  19. johnnnw macrumors 65816

    johnnnw

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    #20
    /thread
     

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