diskutil list sudo diskutil eraseDisk MS-DOS WIN10 GPT /dev/disk2 sudo mkdir /Volumes/WIN10/efi/microsoft sudo cp -r /path/to/windows/efi/boot /Volumes/WIN10/efi/
Since the standard Windows installer often blocks installations on USB drives, we use a tool called or Rufus on a Windows PC. Move your Windows ISO and the external SSD to a Windows PC. Open WinToUSB . Select your Windows ISO as the source. Select your External SSD as the destination. Choose the GPT for UEFI partition scheme. Click Proceed and wait for the installation to finish. Step 4: Disable Secure Boot (T2 Chip Macs) install bootcamp on external drive
Before starting, ensure you have a modern Mac with an Intel processor. Note that Apple Silicon (M1, M2, M3) chips do not support Boot Camp; for those, you must use virtualization software like Parallels. diskutil list sudo diskutil eraseDisk MS-DOS WIN10 GPT
Once you reach the desktop, plug in the drive containing the from Step 2. Open the BootCamp folder and run Setup.exe . Restart one last time when prompted. Troubleshooting Tips Select your Windows ISO as the source
You need to format your external drive so it is ready for the Windows installation. Connect your SSD to your Mac. Open (Command + Space, type "Disk Utility"). Select your external drive and click Erase .
Use a drive with at least 128GB of space. USB 3.0 or Thunderbolt 3 is highly recommended for speed.