During the Windows 10 installation via Bootcamp Assistant on a Mac (typically 2015–2017 models, e.g., MacBook Pro 13" 2016/2017), the process fails with:
Core cause: The macOS APFS/HFS+ container has unmovable files (e.g., local Time Machine snapshots, large cache files, or firmware updates) blocking the shrink operation required for Bootcamp.
1. The Setup (Easy) Creating the partition via the Boot Camp Assistant in macOS is seamless. The GUI is intuitive; you simply slide the bar to determine partition size. The assistant will partition the drive and restart the Mac into the Windows installer. bootcamp 40 4033 windows 10 install
2. The Installation (Standard) The Windows 10 installation process on these machines is standard. You will select the "BOOTCAMP" partition, format it (ensure you click "Format" or it will fail), and let the files copy.
3. The Post-Install Crisis (The "4033" Issue) Upon the first boot into the Windows desktop, you will likely realize the drivers Boot Camp downloaded did not work. During the Windows 10 installation via Bootcamp Assistant
If you do not have a physical Ethernet adapter (Thunderbolt-to-Ethernet or USB-to-Ethernet), you are effectively locked out of downloading the fixes you need.
If your macOS partition is already erased, you can still get the drivers: Core cause: The macOS APFS/HFS+ container has unmovable
Be cautious: Only use archives with verified hashes. Malicious actors sometimes inject keyloggers into driver packages.
This guide covers preparing your Mac, creating/installing Windows 10 via Boot Camp Assistant, installing Boot Camp drivers, and troubleshooting common issues. Assumes a recent Intel-based Mac with enough free disk space; for Apple Silicon Macs, Boot Camp is not supported—use virtualization instead.
| Symptom | Likely meaning | Fix |
|--------|----------------|------|
| Error 0x80070003 | Partition issue | Use Disk Utility to repair disk, then repartition |
| Error 0x8007007B | ISO corruption | Re-download ISO |
| “4033” in log file | Rare offset error; may refer to driver package | Remove existing Boot Camp partition (via Boot Camp Assistant), reboot, retry |
| Not enough space for 40 GB | macOS reserves space for snapshots | Free up space on macOS side before Boot Camp |