However, some Mac computers don't support booting from external USB devices, or don't support certain versions of Windows in Boot Camp, etc.

In macOS, Boot Camp Assistant ( Finder → Applications → Utilities → Boot Camp Assistant) has the ability to create bootable USB disks for installing Windows in Boot Camp on a Mac computer.

Application: Boot Camp Assistant, version 6.1.0 (6067.60.1).

Operating System: macOS High Sierra 10.13.6.

Hardware: MacBook Pro (17-inch, Mid 2010).

This information applies specifically to the following system, but may also apply to other hardware/software versions: OPTIONAL: Re-enable System Integrity Protection (recommended). Code-sign the edited application package (if necessary). OPTIONAL: Restore original permissions (recommended).

Enable Windows versions after Windows 7.

Enable 32-bit Windows 10, and Windows versions prior to Windows 10.

Edit Boot Camp Assistant's Property List file. Obtain your Mac's 'Model Identifier' and 'Boot ROM Version'.

Option B: Disable System Integrity Protection (SIP).Option A: Duplicate the Boot Camp Assistant application package.Obtain permission to edit Boot Camp Assistant's Property List file. Boot Camp Assistant - Enabling creation of bootable USB disks for installing Windows Contents

Boot camp assistant mac