RA_Mac_Book_User

Q: Boot Camp 'Your bootable USB drive could not be created' error

I have a Mac Mini with OS X version 10.8 and Boot Camp version 5.  I am trying to create a bootable USB drive using Boot Camp.  I am using a Windows 7 Pro iso file and a 4 GB flash drive to create it.  I select 'Create a Windows 7 install disk' along with the other two selections.  Everytime I try it, I get the same error message of:  Your bootable USB drive could not be created.  An error occurred while formatting the disk.

 

Could this be a bad flash drive or a software error?

Mac mini, OS X Mountain Lion

Posted on Aug 5, 2012 5:44 AM

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Q: Boot Camp 'Your bootable USB drive could not be created' error

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  • by Loner T,

    Loner T Loner T Sep 29, 2015 4:39 AM in response to zxck
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    Sep 29, 2015 4:39 AM in response to zxck

    zxck wrote:

     

    I tried with a Windows 10 iso that was free from microsoft the error messeage read "Boot Camp only supports 64-bit Windows installations on this platform. Please use a ISO file for 64-bit Windows installation." I especially made sure that I got the 64-bit version. Is there any problems with what I did or is there any solution to the problem. Please help I am hopeless with the apple OS X system thanks

    You downloaded an ISO which contains both 32-bit and 64-bit W10. Use your Product key to download a 64-bit only version. You should first in-place upgrade W7/8+ on your Mac which registers it with Microsoft. This will allow you unlimited re-installations on the same Mac.

  • by sabykhan,

    sabykhan sabykhan Oct 21, 2015 11:42 AM in response to Lexiepex
    Level 1 (0 points)
    Oct 21, 2015 11:42 AM in response to Lexiepex

    seriously thanks very much... i try looking so many website and after i found you.... everything just solve... thanks again

  • by omingoke,

    omingoke omingoke Nov 9, 2015 2:25 AM in response to RA_Mac_Book_User
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    Nov 9, 2015 2:25 AM in response to RA_Mac_Book_User

    Got the same problem.

     

    Done unmounting.

    Done changing .iso to .dmg.

    Done separate file x64 W7 Ultimate only, still stuck.

     

    What to do? Pls help.

     

    Thaaanks

  • by Loner T,

    Loner T Loner T Nov 9, 2015 6:00 AM in response to omingoke
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    Nov 9, 2015 6:00 AM in response to omingoke

    What year/model is your Mac?

  • by omingoke,

    omingoke omingoke Nov 9, 2015 5:38 PM in response to Loner T
    Level 1 (0 points)
    Nov 9, 2015 5:38 PM in response to Loner T

    Mid 2012/MBP

  • by Loner T,

    Loner T Loner T Nov 9, 2015 5:57 PM in response to omingoke
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    Nov 9, 2015 5:57 PM in response to omingoke

    1. If your ISO contains any single file larger than 4GB, it will not be copied to the USB.

    2. If the USB is USB3, this error can happen, but is inconsistent across brands of USBs.

    3. Changing the DMG to .iso and back is not going to make a difference.

    4. Did this ISO come from Microsoft download?

  • by omingoke,

    omingoke omingoke Nov 9, 2015 6:11 PM in response to Loner T
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    Nov 9, 2015 6:11 PM in response to Loner T

    1. If your ISO contains any single file larger than 4GB, it will not be copied to the USB.

    Well, yes, my ISO files are larger than 4G

    2. If the USB is USB3, this error can happen, but is inconsistent across brands of USBs.

    Nope, my USB is not USB3, its USB2

    3. Changing the DMG to .iso and back is not going to make a difference.

    Got it.

    4. Did this ISO come from Microsoft download?

    Nope, I'm making the ISO file from disk installer.

     

    What do you think? Where have I gone wrong?

  • by omingoke,

    omingoke omingoke Nov 9, 2015 6:15 PM in response to Loner T
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    Nov 9, 2015 6:15 PM in response to Loner T

    Oh sorry, my single version Win7 Ultimate 64 bit its 3.2G \

     

    Should be working, no?

  • by Loner T,

    Loner T Loner T Nov 9, 2015 6:25 PM in response to omingoke
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    Nov 9, 2015 6:25 PM in response to omingoke

    As a test, can you download W7 from https://www.microsoft.com/en-us/software-download/home and try to create the USB, using the first two options in BC Assistant? We do not need to install anything yet. Please be aware that the Microsoft download can be corrupted over a wireless connection. Use a wired connection, if possible.

  • by omingoke,

    omingoke omingoke Nov 9, 2015 7:31 PM in response to Loner T
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    Nov 9, 2015 7:31 PM in response to Loner T

    Will try to download, thanks for the support.

    I'll let you know the result

  • by magnus_PH,

    magnus_PH magnus_PH Nov 15, 2015 4:29 AM in response to omingoke
    Level 1 (5 points)
    Nov 15, 2015 4:29 AM in response to omingoke

    any updates?

  • by mikethemartian,

    mikethemartian mikethemartian Nov 25, 2015 7:56 PM in response to RA_Mac_Book_User
    Level 1 (5 points)
    Nov 25, 2015 7:56 PM in response to RA_Mac_Book_User

    I am trying to install Windows 10 Enterprise using Boot Camp but I also keep getting the error "Your bootable USB drive could not be created"

     

    I have a late 2012 Mac Mini with Yosemite.

     

    The IT department at my company gave me the standard setup.exe and other files and folders on a flashdrive.  I used Mac Disk Utility to create an ISO file from this which I have saved in my main Mac drive.  When I use Boot Camp I select the ISO file and my destination disk which is a 32GB SanDisk Cruzer flashdrive which I have already formatted for MS-DOS FAT using Disk Utility.  When I start the process the ISO file appears in Disk Utility so I first "Eject" it and then "Remove" it.  However it keeps remounting. I get to the prompt "The drive will be erased.".  This is my last chance to eject and remove the ISO file in Disk Utility which I do before continuing.  The volume gets formatted and then begins to "Copying Windows Files" after which I get the "Your bootable USB drive could not be created" error.  The end result is a volume named "WININSTALL" with only one file "autorun.inf"

     

    Is there a way to prevent the ISO file from being remounted?

  • by Loner T,

    Loner T Loner T Nov 26, 2015 5:39 AM in response to mikethemartian
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    Nov 26, 2015 5:39 AM in response to mikethemartian

    1. Is the USB from your IT Department still connected to your Mac when you try to create the USB installer on the 32GB SanDisk flash drive?

    2. Can you move the ISO to your Documents folder rather then leaving it on your Desktop?

    3. Is the 32Gb SanDisk a MBR scheme device or a GPT with a FAT partition on it? You can also post the output of Terminal diskutil list command with your USBs connected.

  • by mikethemartian,

    mikethemartian mikethemartian Nov 27, 2015 12:17 PM in response to Loner T
    Level 1 (5 points)
    Nov 27, 2015 12:17 PM in response to Loner T

    Loner T thanks for following up with me

     

    1. Is the USB from your IT Department still connected to your Mac when you try to create the USB installer on the 32GB SanDisk flash drive?

     

    I only borrowed the flash drive long enough to copy the files over to the Mac main drive.  I didn't have it when I tried to install via Boot Camp.

     

    2. Can you move the ISO to your Documents folder rather then leaving it on your Desktop?

     

    I moved the ISO to both the Documents and Downloads folders but get the same error.

     

    3. Is the 32Gb SanDisk a MBR scheme device or a GPT with a FAT partition on it?

     

    When I partition the flashdrive using Disk Utility I choose the option "Master Boot Record"

     

    I should add that I also have Parallels 10.3.  When I try to create a virtual installation Parallels has no problem recognizing that it is a Windows 10 ISO, but I eventually get an error that "No boot device is available".  I don't know if that may give a clue.

     

    You can also post the output of Terminal diskutil list command with your USBs connected.

     

    Mikes-Mac-Mini:~ Mike$ diskutil list

    /dev/disk0

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *121.3 GB   disk0

       1:                        EFI EFI                     209.7 MB   disk0s1

       2:          Apple_CoreStorage                         121.0 GB   disk0s2

       3:                 Apple_Boot Boot OS X               134.2 MB   disk0s3

    /dev/disk1

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *1.0 TB     disk1

       1:                        EFI EFI                     209.7 MB   disk1s1

       2:          Apple_CoreStorage                         999.3 GB   disk1s2

       3:                 Apple_Boot Recovery HD             650.1 MB   disk1s3

    /dev/disk2

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:                  Apple_HFS Macintosh HD           *1.1 TB     disk2

                                     Logical Volume on disk0s2, disk1s2

                                     C0DA7F0B-28F9-46F5-AC5B-6AED8CFE4EC0

                                     Unencrypted Fusion Drive

    /dev/disk3

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *2.0 TB     disk3

       1:                        EFI EFI                     209.7 MB   disk3s1

       2:          Apple_CoreStorage                         2.0 TB     disk3s2

       3:                 Apple_Boot Boot OS X               134.2 MB   disk3s3

    /dev/disk4

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:     FDisk_partition_scheme                        *32.0 GB    disk4

       1:                 DOS_FAT_32 WININSTALL              32.0 GB    disk4s1

    /dev/disk5

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:                  Apple_HFS TM Backup              *2.0 TB     disk5

                                     Logical Volume on disk3s2

                                     19AF0415-7257-4569-823E-DFFA07C7041D

                                     Unlocked Encrypted

    /dev/disk6

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:                            WINDOWS 10             *4.0 GB     disk6

    Mikes-Mac-Mini:~ Mike$

  • by Loner T,

    Loner T Loner T Nov 27, 2015 12:27 PM in response to mikethemartian
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    Nov 27, 2015 12:27 PM in response to mikethemartian

    1. You should disconnect all storage that is not needed for Windows installation. Only the USB Installer (SanDisk) and the internal disk on Mini should be connected.

    2. Is disk6 your ISO?

    3. Your USB seems to be correctly formatted.

    4. We can manually create a USB Installer, if necessary. Do you want to try this method?

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