Error creating bootcamp USB installation.

Discussion in 'Windows, Linux & Others on the Mac' started by Alpina, Dec 5, 2011.

  1. Alpina macrumors newbie

    Nov 17, 2011
    I'm trying to create a bootcamp installation of Win7x64on my 2011 MBA 13.

    Using an ISO file and BootCamp assistant when it says copying windows files it suddenly stops at about 40% and nothing more seems to happen, I do spot some harddrive activity using activity controll put it seem painfully slow, any ideas?
  2. johnhurley macrumors 6502a


    Aug 29, 2011
    I don't recall exactly how long it hangs at various spots but yeah it does look a little weird at times.

    If I remember correctly my total time for doing the win 7 initial install was probably around 20 minute time frame ... ( maybe a little bit more ) ... before rebooting and putting in win 7 drivers etc.

    Did you remember to format the bootcamp partition as NTFS ( advanced option ) before proceeding with the install?

    Did your install eventually finish or did you abort out and if so how long were you waiting before ending?
  3. PaIvA macrumors member

    Jun 28, 2010

    i'm also experiencing the same problem on my macbook air 11''... i started the boot camp assistant, select all three options and select my ISO of windows 7...
    then the bootcamp formatted my usb flash drive and started to copy the ISO of windows 7 to the usb flash drive... but the it stop, and informed me that bootcamp assistant could made a bootable usb flash drive...

    any ideas??
  4. johnhurley macrumors 6502a


    Aug 29, 2011
    Maybe your usb drive is too small?
  5. PaIvA macrumors member

    Jun 28, 2010
    problem solved..i tried with another ISO file and everything went well...i suppose my first ISO file was a corrupted file...
  6. zkaudio macrumors member

    Jul 4, 2007
    having this EXACT problem right now and no my ISO is not corrupt, i have verified it on multiple machines and recopied it over... how did no one post a response but one guy?
  7. Wossox macrumors newbie

    Nov 15, 2011
    I am experiencing the same thing right now. Bootcamp suddenly stops while copying windows archives and it ejects the usb and says that is is not ejected properly. I have tried with different USB's and different ISO's.. but it's all the same :confused:
  8. maiaz macrumors newbie

    Oct 5, 2012
    as for me, helped preformattind USB via DiskUtility, manually creating FAT partition named WININSTALL. after this workaround all files copied w/o any problem.
  9. dopecho macrumors newbie

    Jan 22, 2013
    restart solve it for me

    I had the same problem and finally decided to restart my macbook. That solved the problem and the files copied successfully :)

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