If you are using a newer Windows 10 ISO (after version 201809), then UUByte ISO Editor is the best app for creating a bootable USB on Mac. I managed to create several bootable Windows 10 USBs on Mac (Mojave, Catalina and Big Sur) in recent years. I had to create a Windows partition on my hard drive and boot into that to make a functioning boot drive. The ExFAT formatted drive with Windows ISO did not work as a bootable drive. Will report back if I run into any issues.

All this said, I have yet to actually use this drive to INSTALL Windows as I'm building the computer tomorrow. I just did this with a Sandisk 32GB drive and it worked perfectly. Select 'ExFAT' in the format dropdown and confirmĪfter this process you are able to move larger files into your USB drive.Select drive you want to be the boot drive.Here are the steps! For reference I'm running Mac OS Monterey (v12.0.1) The easiest thing to do is just to reformat your drive to 'ExFat' using Disk Utility. Sorry if this is a breach of etiquette (commenting on an old thread!) You don't need to download any new software to do this, everything is already included in current Mac OS. Once it's done, unmount the USB drive (right-click and select Eject) from the desktop.In case anyone stumbles onto this thread I'm going to give what I believe to be the easiest solution to this problem. Boot Camp Assistant will create the bootable Windows 10 USB.Select the Windows 10 ISO image from Mac's internal storage and select Continue.Select Continue, and check the option to Create a Windows 10 or later install disk.Go to Finder > Applications > Utilities and launch Boot Camp Assistant.To create a bootable Windows disk using BootCamp: You will also need a 16GB USB disk, alongside the Windows ISO file for this method.

Note: You can't use Boot Camp Assistant on Macs with Apple M1 chips. You can also choose to install additional Windows support software, which will be helpful if you are planning to use the bootable disk to install Windows on your Mac. This is an easy method and requires no additional software to be installed. If you have a Mac with an Intel processor, you can also use BootCamp Assistant to create a bootable Windows installation USB disk.

Method 2: Create a Bootable USB Disk Using BootCamp Assistant

Burn microsoft windows 10 iso to usb