Boot Camp Error "Your bootable USB drive could not be created"

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Level 1

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Boot Camp Error "Your bootable USB drive could not be created"

Hello,

I have Macbook pro 15 inch mid 2012, running Mojave 10.14 i am trying to install windows 10 (April update) from their website using bootcamp but the error "Your bootable USB drive could not be created" "(there is not enough space available on the disk)" pops up after a few minutes of launching the bootcamp.

I am using Kingston data traveler 32Gb usb 3.0 drive.

Things what i tried:

Tried both versions of WINDOWS 10 which was on microsoft website, April and October updates.
Different format of USB did not work, bootcamp formats again on Fat32.

As i know this error is because Fat32 format does not allow to transfer files more than 4Gb, i tried to put the windows files manually one by one but there is one file which is 4.09Gb and it did not work.

Hope to get help from someone.

MacBook Pro 15", 10.14

Posted on Feb 5, 2019 2:57 PM

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Answer 1

Loner T

Level 9

59,536 points

Feb 5, 2019 4:54 PM in response to rniko

W10 1803 install.wim is less than 4GiB (not 4GB). You may have issues with the Kingston DT. USB3 drives will not work. You need a USB2 Flash drive.

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Answer 2

Loner T

Level 9

59,536 points

Feb 6, 2019 2:16 PM in response to YHLien

I am bit curious how does the lack of USB 3 driver in windows ISO linking to the Boot Camp? I mean Boot Camp is running in Mac OS X side and can do whatever it wants to do, right?

Yes, and it does. It has drivers for a USB2 and USB3 drive. USB2/3 ports are physically the same (unlike USBc). It builds the Windows installer.

Or Boot Camp simply checks the type of USB flash and throws away any flash not in USB 2?

No. It will build an installer on a connected drive.

The reboot to switch to Windows Installer, removes all macOS drivers and macOS from the context. The WinPE must recognize the disk, but it has no drivers for USB3, so it fails with 'No bootable device'.

Also, see http://codeabitwiser.com/2014/03/how-to-install-windows-7-with-only-usb-3-0-ports/ on how IntelXHCI is added to the boot.wim and install.wim files.

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Answer 3

YHLien

Level 1

31 points

Feb 5, 2019 4:57 PM in response to rniko

I had the same problem on a 16 GB USB flash. I could work around the problem by using 8 GB USB flash...

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Answer 4

YHLien

Level 1

31 points

Feb 7, 2019 8:24 AM in response to Loner T

So the Boot Camp assistant will analyse the hardware configuration and build the installer with all corresponding drivers?

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Answer 5

YHLien

Level 1

31 points

Feb 6, 2019 8:27 AM in response to Loner T

Indeed, 1803 could just barely fit into 8 GB and 1809 will not fit together with Apple support software... I noticed apple did say USB2 flash but thought USB3 would work, especially it seemed work fine for first stage (moving the image content into the flash)...

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Answer 6

Loner T

Level 9

59,536 points

Feb 6, 2019 12:40 PM in response to YHLien

I noticed apple did say USB2 flash but thought USB3 would work, especially it seemed work fine for first stage (moving the image content into the flash)...

There are no USB3 drivers on the Windows ISO, so the Windows installer will not start.

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Answer 7

YHLien

Level 1

31 points

Feb 6, 2019 1:23 PM in response to Loner T

I am bit curious how does the lack of USB 3 driver in windows ISO linking to the Boot Camp? I mean Boot Camp is running in Mac OS X side and can do whatever it wants to do, right? Or Boot Camp simply checks the type of USB flash and throws away any flash not in USB 2?

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Answer 8

Loner T

Level 9

59,536 points

Feb 7, 2019 12:57 PM in response to YHLien

BC Assistant uses the Mac Model Identifier to drive it's flow. If you are curious, look at Bootcamp Info.plist file, but do not change it.

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Boot Camp Error "Your bootable USB drive could not be created"

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