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Level 1

5 points

Your bootable USB drive could not be created, BCA 6, OS 10.11

Hello, I'm trying to make bootable USB drive in order to instal W10. I keep getting the same error:

"Boot Camp only supports Windows 7 or later installation on this platform. Please use an ISO file for Windows 7 or later installation."

I'm running OS 10.11 fully updated, BCA 6. The W10 is x64. The USB drive is 64GB.

My MacBook Pro is a Retina, Mid 2012 and all the specs are fall into the recommended.

What could be happening?

MacBook Pro with Retina display, OS X El Capitan (10.11), Mid. 2012

Posted on Oct 12, 2015 7:32 PM

29 replies

Loner T

Level 9

59,471 points

Oct 13, 2015 11:29 AM in response to SailorAgave

You may need a developer account, but try using your AppleID first.

b5005239

Level 1

0 points

Dec 13, 2015 6:54 AM in response to SailorAgave

I have same problem like you. please tell me if you have the solution.

Loner T

Level 9

59,471 points

Dec 13, 2015 8:01 AM in response to b5005239

1. Disconnect all external storage.

2. Run SMC/NVRAM reset.

3. Use a Wired connection if you plan to download Windows Support Software or if it is automatically checked for you.

4. Do not use an external USB HDD for the Windows Installer. You must use a USB2 flash drive (USB3 may not work on older models).

5. Please test and report any issues.

In OPs case, despite the recommendation to disconnect the external disk, the Seagate did not seem to be disconnected during the build.

b5005239

Level 1

0 points

Dec 14, 2015 7:38 AM in response to Loner T

Thank you for your kindly reply.

I fellow your suggest step by step but I've got the same issue.

If you have anything to fix this problem please tell me.

Thank you

Loner T

Level 9

59,471 points

Dec 14, 2015 12:02 PM in response to b5005239

Can you post the output of

diskutil list

from OSX Terminal with your USB flash drive connected?

b5005239

Level 1

0 points

Dec 15, 2015 3:40 AM in response to Loner T

I don't sure this is the one that you request?

Loner T

Level 9

59,471 points

Dec 15, 2015 4:50 AM in response to b5005239

Start a Terminal window using Applications -> Utilities -> Terminal and triple-click the following line, Copy (Command+C) and Paste (Command+V) into the Terminal window.

diskutil list

b5005239

Level 1

0 points

Dec 15, 2015 4:59 AM in response to Loner T

this one , isn't it?

Loner T

Level 9

59,471 points

Dec 15, 2015 5:07 AM in response to b5005239

1. You should unmount the Windows 10 ISO image.

2. Your USB looks correctly formatted.

3. Use a Wired connection, if possible, when building the USB. The Support Software download is faster and more reliable.

b5005239

Level 1

0 points

Dec 15, 2015 5:14 AM in response to Loner T

Can you please tell me how to unmount the windows 10 iso image?

Loner T

Level 9

59,471 points

Dec 15, 2015 7:17 AM in response to b5005239

In Disk Utility, if you click on the Image, and click on Unmount, it should unmount the image. You can also use diskutil eject from the Terminal.

diskutil eject disk3

The syntax for the Terminal command is

diskutil eject

Usage: diskutil eject MountPoint|DiskIdentifier|DeviceNode

b5005239

Level 1

0 points

Dec 15, 2015 3:50 PM in response to Loner T

I had unmounted the image and build the usb with wifi but it still doesn't work. I never got wired connection before I wondering which port that can use for wired connection and Do I have to prepare any cable for this?

Thank you