I had to do the same thing a while back when my mom’s old PC completely refused to boot, and all I had was my MacBook. What ended up saving me was WonderISO — it’s honestly the easiest way to burn ISO to USB on Mac without fighting Terminal commands.
Here are two practical, real-world methods to burn ISO to USB on Mac, explained in a simple way (perfect if you’re not tech-savvy):
(1) The easiest option is WonderISO — it’s a full GUI app that lets you burn ISO to USB on Mac in just a few clicks.
- Open WonderISO → choose Burn to USB → select your Windows 10 ISO → pick the USB drive → click Start.
- It automatically sets up the partitions and makes the USB bootable on both Intel and Apple Silicon Macs.
- If you’re in a rush or don’t like commands, WonderISO is hands down the fastest and safest way to burn ISO to USB on Mac.

After the boot disk is created, insert it into the computer and set it to boot from USB. Generally, press and hold F2, F11 or Del key during startup. At this time, you will enter the installation interface of the Windows system like below.

(2) If you prefer using built-in macOS tools, do it manually with Terminal.
First, erase the USB using Disk Utility as MS-DOS (FAT) + GUID (Apple’s official guide: support.apple.com/guide/disk-utility).
Then open Terminal and run:
hdiutil mount /path/Windows10.iso
diskutil list
cp -R /Volumes/CCCOMA_X64FRE_EN-US_DV9/* /Volumes/WINUSB/
diskutil eject /Volumes/WINUSB/
This command-line way also burns ISO to USB on Mac, but make sure the ISO doesn’t have files larger than 4GB (FAT32 limit).
If it does, you’ll need to use the first method.
Either way, both work perfectly to burn ISO to USB on Mac and get your mom’s PC ready for a clean Windows 10 install.