Run Boot Camp Assistant. It will ask you to split your drive. For Windows 10, allocate at least 60GB. Drag the slider. Click Install.
The assistant will:
On older T2 Macs (pre-2020), Boot Camp Assistant will ask for a USB drive. On newer Macs (iMac Pro, MacBook Pro 16-inch with firmware updates), you can choose "Install Windows 10 without a USB" – the drivers are copied to a hidden partition. bootcamp 40 4033 windows 10 install
Before troubleshooting, ensure your hardware meets the modern standards for this legacy process: Run Boot Camp Assistant
Here, you trick the system by manually creating space before opening Boot Camp Assistant. Windows will install and restart several times
Warning: One wrong diskutil command can erase your drive. Follow exactly.
| Action | Status | |--------|--------| | ✅ Delete local Time Machine snapshots | ☐ | | ✅ Disable Power Nap and sleepimage | ☐ | | ✅ Run First Aid from Recovery mode | ☐ | | ✅ Retry Bootcamp with at least 60GB free space | ☐ | | ✅ If still fails, partition via Recovery Disk Utility | ☐ | | ✅ Final resort: Erase SSD, clean install macOS, then Bootcamp immediately | ☐ |