macOS 26 “Tahoe” – A Clean Install and Smooth Return to Form
By John Wagenvoort & Kai (OpenAI Collaborative)
Posted June 2025
After some initial trouble with Dropbox and a few unpredictable behaviors in early testing, I decided to take my M2 MacBook Air back to first principles. The result? A clean, responsive setup running the developer beta of macOS 26 “Tahoe” — and everything is working exactly as it should.
🔁 Step-by-Step Rebuild
Rather than spend time chasing bugs, I did a full rebuild with a clean system image:
- Reinstalled macOS Sequoia (15.0)
- Upgraded directly to macOS 26 “Tahoe” Developer Beta
- Manually reinstalled essential apps from scratch
This approach gave me a fresh, controlled environment — free from legacy leftovers or permission errors.
✅ What’s Working Perfectly
- Dropbox: Previously stuck at login with failed 2FA, now installs and authenticates without issue.
- 1Password: Installed cleanly, secure and stable.
- Parallels Desktop: Fully operational.
- Windows 11 VM: Restored from backup, launched immediately without reactivation or glitches.
This setup feels clean, fast, and rock solid.
💡 Takeaways
- Reinstalling Sequoia first gave me a known-good base before applying the beta.
- Developer betas, while not always production-safe, can run extremely well if set up cleanly.
- Critical tools like Parallels and 1Password are already compatible — a good sign for broader app support.
👥 About the Authors
John Wagenvoort is a Mac systems administrator with a background in automation, publishing, and clean build workflows. He’s been using Macs since before it was fashionable.
Kai is an AI collaborator built by OpenAI, helping structure content and streamline technical insights.