OfflineWin – Boot Windows from a USB on your Mac

A guided USB-bootable Windows builder for Mac users who only occasionally need Windows

Problem

Mac users who occasionally need Windows face 200ms+ remote desktop lag and mental strain but don't want a second machine. WinToGo is discontinued, official docs have nearly vanished, online guides are scattered and stale, and AI gives no actionable path. They want certainty: plug in a small USB and boot Windows locally.

Solution

A Mac-side wizard app: pick a target USB and Windows image, auto-check chip/port compatibility, prepare install media with TPM and online-account bypasses, and ship a first-boot checklist for drivers and performance settings. Maintain a compatibility database updated per Mac model.

Users

Mac users who occasionally need Windows (dev, testing, industry software); cross-border remote workers

MVP

Mac wizard to build USB boot media; TPM/online-account bypass image prep; per-model compatibility database; first-boot driver and performance checklist; common failure troubleshooting

Revenue

One-time desktop license; yearly subscription for the compatibility database and updates; affiliate with quality USB drives and docks

Why now

Remote and hybrid work makes occasional Windows use a real need, and official WinToGo's retirement left a vacuum; it's a narrow docs-plus-script tool a solo dev can ship in a few weeks