making a bootable usb drive for mac on windows

Making A Bootable Usb Drive On Windows Install Saying That

Making A Bootable Usb Drive On Windows Install Saying That

If you receive error messages while copying the Windows files to your USB drive saying install.wim: File too large for your target medium, or you get an error during install saying that:Sourcesinstall.wim can not be opened (error code 0x8007000D ), then you picked a Windows ISO that contains files that exceed the FAT32 limit of 4 GB.

The instructions are absolutely foolproof, no terminal is required and the resulting USB drive can be used to install Windows on any machine and is not limited to Boot Camp.

Preparations You need a USB stick with a capacity of 8 GB or more.

All the data on the USB drive will be lost in the process, so make sure to save the data elsewhere before you continue.

Download Windows 10 In this step you have to download a rather old version of Windows 10.

If you want to find out why this is necessary please refer to the section on the bottom of this article.

Go to and select Windows (Final) as type, Windows 10, Version 1803 Redstone 4 Apr 2018 (build 17134.1) as version (do not select a more recent version), Windows 10 as edition, a language of your choice and finally the file that ends on x64.iso if you dont know any better.

Finally click Download and continue with the next step in the meantime.

Warning It looks like this step is no longer working adequately, because the described ISO images are not available for download anymore.

If you get stuck here please try to use the websites search function on the top, search for Windows 10, Version 1803 (Updated Apr 2018) (x64).

You will get to see the cryptic SHA1 key on the right which you can use to easily search the web for alternative download sources.

For the German version, for instance, the SHA1 key is 537f817703323d28f673b4e36e377919e1ee034e from which I found this download from ComputerBase.

If you dont find a download for your language, give the German version a try.

Format the USB drive Make sure your USB drive is plugged into your Mac and continue by opening the Disk Utility app by either searching for it or by navigating to ApplicationsUtilitiesDisk Utility.app manually.

Click View in the top left corner and make sure Show all devices is enabled.

Insert an arbitrary name (e.g.

USB) but make sure to select the MS-DOS (FAT) format and the Master Boot Record scheme.

Create a bootable USB drive When the Windows 10 ISO download is done, double click the file to open it.

Now copy all files to your USB drive (e.g.

The copy process may take a little while, depending on the speed of your thumb drive.

You are now ready to boot Windows 10 Why is an old Windows ISO file necessary Microsoft offers official downloads for Windows ISOs, but unfortunately you can not use them.

On macOS you are forced to use the FAT32 filesystem for your thumb drive, because NTFS is not supported by macOS and ExFAT is probably not supported by your BIOS.

Therefore you need to download an older version of Windows 10 from an alternative source.

The files however are still coming from Microsoft directly, so there is nothing to worry about.

Once the old Windows version is installed, you can use the integrated Windows updater to install the most recent version.

Making A Bootable Usb Drive For Mac On Windows