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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

Best reply

Lexiepex

Level 6

14,102 points

Posted on Aug 5, 2012 5:52 AM

in another thread following solution was given:

"A very simple solution: make sure the ISO file is not mounted when running the Boot Camp Assistant!"

View in context

90 replies

May 27, 2016 8:36 AM in response to needhelpBC

Eh, this is indeed very frustrating. ^_^

I have the same problem. I have a iMac Retina 5K 27 -inch Late 2015 with OS X El Captain 10.11.4

I have bought a Windows 10 x64 home edition

Tried pretty much all of the above:

1) Formatted Usb drivers in MS-DOS FAT

2) tried 4 different USB drivers

3) Unmounted the iso. It keeps mounting himself back any time I try to use bootcamp. I tried to unmount it on the flight... still does not work

4) Obviously my iso file is on my computer ( I cannot understand how anyone can even think to leave it on Usb, while trying to install it 😀)

5) My file is Win10_1511_1_English_x64.iso cosistent with other users

I am at a loss. Obviously, this is not a cheap computer that I bought it under the impression that I could install Windows. No Windows=no work which pretty much means I have a useless machine ^_^.

Any help would be appreciated.

Thanks

Loner T

Level 9

59,471 points

May 27, 2016 7:04 PM in response to ClaudioLettieri

1. Can you post the MD5sum of your ISO file?

2. 2015 and later Macs do not use a USB installer, but use an internal partition called OSXRESERVED. Please see https://help.apple.com/bootcamp/assistant/6.0/#/bcmp173b3bf2 for reference.

Jun 3, 2016 9:19 AM in response to Loner T

Hi Loner T,

thanks for the reply:

1. MD5 (Win10_1511_1_English_x64.iso) = a4fde74732557d75ffc5354d0271832e

Hope this is what you need

2. IMac 27 inches does need a usb. I installed Windows on my Macbook pro 2015 without a Usb driver. The iMac bootcamp is different. If you read the post you can see that iMac is not supported.

Still seems like I cannot find a solution 😟

Jul 14, 2017 3:42 AM in response to RA_Mac_Book_User

I keep getting "Your bootable USB drive could not be created" and can't find the answer. I've been looking through this thread but nothing seems to help.