"Create a Windows 7 install disk"

Discussion in 'Windows, Linux & Others on the Mac' started by winks360, Nov 19, 2011.

  1. winks360 macrumors member

    Mar 20, 2009
    Time Capsule
    I am trying to use boot camp assistant and one of the options is to Create a Windows 7 install disk but it is grayed out. It states that I need a USB flash drive and a Windows 7 ISO image. Which I have both of, but the option not selectable?

    I erased the Flash drive and tried both Mac OS Extended (Journaled) and MS-DOS (FAT). And I currently have the .ISO on my desktop.

    What am I doing wrong here?
  2. johnhurley macrumors 6502a


    Aug 29, 2011
    What kind of machine exactly? What version of the operating system are you running?

    Can you do a screen snapshot to show us what you see when you say it is grayed out?
  3. cteselle macrumors newbie

    Jul 18, 2010
    I've been researching this as well. Turns out if your computer shipped with an optical drive that option is greyed out. MBA and Mini are the only ones apparently that support the USB install. :(

    Hopefully they will one day allow this for all.
  4. iWind130290 macrumors member

    Aug 30, 2011
    Ha Noi, Viet Nam
    1> At first, you'll need an USB formatted MS-DOS(FAT) by your Mac.
    2> After that, ask your friend to use his Windows PC to create an Windows USB Installer by a software called WinToFlash.
    3> Next step is easy, Download and Install a software called rEFIt for your Mac and restart 2 times after finishing installation.
    4> Use Bootcamp.app or DiskUtility.app to create a partition for Windows formatted MS-DOS(FAT)
    5> Plug-in the USB and restart your Mac. At rEFIt start up screen, choose exactly the Windows installer on USB. Theres a small icon to notice that it's come from an external driver.
    6> And now, once you're inside the Windows installation. Just go forward to do the thing you want.

    There's some problems which can be happened at step 5:
    a> Black screen with notice: "No Driver Filesystem" >>> make sure that the USB formatted MS-DOS(FAT), not NTFS. So, just go back to step 1.
    b> Black screen with blinking cursor, after that a notice comes up: "Missing System..." >>> Check it out If your ISO is bootable or not? We need a bootable ISO.

    For all the guys who keep thinking that Only MBA and Mac Mini can install Windows via USB. This thing would work on any MAC.
  5. marnuc macrumors member

    Sep 29, 2011
    Guayaquil, Ecuador

    I tried these steps, but when i boot with rEFIT, i get the message that there is no bootable device .
    I have formatted in ms dos, and used Wintoflash to trasnfer the setup files from the win7 dvd to the usb drive.

    Please can you help me with this?

  6. r3voLoLwuT macrumors member

    Jul 29, 2010
    Yup, the new EFI on the Macbook Pros will not allow boot to USB for some reason. I ran into this problem as well. I have a broken superdrive and ended up getting around it installing boot camp via Parallels.

    If you have your superdrive, I would suggest putting it back in for the boot camp install.
  7. marnuc macrumors member

    Sep 29, 2011
    Guayaquil, Ecuador
    hahah I was trying to avoid doing that, but I guess there is nothing else to do, I hate apple for doing this
  8. mulo macrumors 68020


    Aug 22, 2010
    Behind you
    how do you do that?
  9. AppleSupportTea macrumors newbie

    Jun 25, 2012
  10. PPFee macrumors 6502


    Feb 27, 2011
    Hey man, i dont actually need this tool right now, i came across this thread searching for how to make a bootable flash drive windows 7/8 disk from OS X terminal, ive done it before but i need a guide because im not too familiar with command prompts. Anyway i saw this post with the tools you made and that no one has replied and just wanted to say thanks, i relied on something similar to get my 2008-9 Aluminum Unibody Macbook ( not pro, the one and only aluminum macbook) and im sure at some point someone will find this a godsend, anyway just wanted to say thanks for the contribution.
  11. clwolf macrumors newbie

    Apr 3, 2012
    Thanks so much! This worked perfectly on my MacBook Pro (Late 2011). I didn't have any blank DVDs at the time, and this was perfect!
  12. unabomber macrumors newbie

    Aug 14, 2012
    For those of you, using Mountain Lion, a window pops up telling you the application is corrupted.

    It's not. It's just the new File Vault protecting your computer from apps Apple doesn't like..

    Go to System Preferences -> Security & Privacy and on General tab under "Allow applications downloaded from:" select Anywhere.

    The hacked BootCamp Assistant will now work.
  13. Antoni Nygaard macrumors 6502a

    Antoni Nygaard

    Jun 23, 2009
    Is it possible to add the 27 iMac late 2009 model identifier 11,1 ?


    I figured out how to edit the plist myself
  14. Gwyneth Llewely macrumors newbie

    Gwyneth Llewely

    I'm curious too. It's the second time I have read this suggestion on the 'net, but it seems to be impossible: Parallels only allows to 'use' an existing Windows partition, previously created with Boot Camp. It doesn't allow to install an .ISO to a blank Windows partition.

    If it does, well, then it isn't obvious, and I, for myself, would love to know how it's done.

    Note: my SuperDrive is faulty and will not read/write most disks, and my Late 2006 iMac cannot boot from USB flash drives, even with rEFIt, which I do have installed — thus I need an alternative to install Windows via an .ISO on a fresh partition, without using either CDs or anything not directly connected to the motherboard
  15. eeclipse16 macrumors member

    Jun 19, 2012
    I didn't read through the whole thread but is the usb flash drive formatted to a GUID partition table? If not it needs to be.
  16. Gwyneth Llewely macrumors newbie

    Gwyneth Llewely

    It most certainly is :)
  17. monkeybagel macrumors 65816

    Jul 24, 2011
    United States
    Only a subset of Macintoshes can boot Windows from a USB drive. I know from personal experience that the 2011 MacBook Air and the 2012 MacBook Pro 15" non-retina (and I assume the retina model will as well) can boot Windows from a USB disk. The current iMacs cannot that I have seen. The late 2011 MacBook Pro does not seem to either.

    Here's what I think will boot Windows from USB. Please correct me if needed:

    2011+ MacBook Air (confimred)
    2012+ MacBook Pro (confirmed)
    2012 MacBook Pro with Retina display (assumed - not confirmed)
    2011+ Mac mini (assumed - not confirmed)

    Will not-
    Mac Pro (all models)
    iMac (all models)
  18. TheInnovator macrumors newbie

    Aug 21, 2012
    I just confirmed that usb installation works on the MacBook Pro Retina today.


    I'm currently trying to install windows 7 on my friends MacBook. If I did it by disk, I would have to defrag and format his hard drive. So I'm resorting to usb. Will it work? The option to create a disk is greyed out. Does that link help me bypass that part?
  19. Stridder44 macrumors 68040


    Mar 24, 2003

    That "hack" is fairly simple, the hard part and issue here is getting them to boot off of said USB device.
  20. seyedhossein, Aug 22, 2012
    Last edited: Aug 22, 2012

    seyedhossein macrumors newbie

    Aug 20, 2011

    anybody try this Boot Camp Assistant

    and install windows from usb flash drive on imac 27" (late 2010) 11.2 ?!

    i wish one day in Future install windows from usb on all mac computer !!!

    this day is not so far !!!

    or is far ?!


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