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

I have the same problem. Then I find out the problem was the iso file. If you are using a torrent software like Utorrent to download the iso file. Make sure you must quick Utorrent before created an boot usb. Hope it work !

Thanks JacobGK. this worked perfectly, although I'm not sure why I had to move the iso image to the desktop this week. I had bootcamped another MacBook Air last week and it worked successfully with the ISO image on the USB. Anyway, thanks again, I'm off and running!

Hey, I'm getting the same error.

I just purchased Windows 8.1, and used the Media Creator tool from Microsoft to generate the media necessary for a flash drive install, and then created an ISO from that which was placed in my documents. However, even though I eject the ISO before selecting it in boot camp assistant, after it formats my other USB drive it mounts the ISO in disk utility again, causing the error message to display.

Please! Any help would be huge!

I kept getting the same error - listened to everyone else's advice with unmounting the image, trying a new flashdrive, etc - then realized that I was trying to mount the Boot Camp iso instead of the Windows 7 iso! 😝

I am having an issue trying to use bootcamp to install my windows 8.1 and it says that " your bootable usb drive could not be created" I don't know anything about computers and i don't know where to go for help

Yes!!! This worked for me as well! I was so scared because i just spent $135 on windows 8 and it wasn't working but now after deleting the files on the usb and just plugging it in, it started formatting my usb and its hopefully going to go to the stage where i partition my drives! Thanks for the help, you saved my *** big time!!!!!!

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

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.

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?

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?

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.

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?

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.

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$

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?