Windows USBs, from macOS.
Select your Windows ISO and let MACUS apply MBR, FAT32, and UEFI defaults. Large WIM files split automatically with bundled wimlib.
Windows support details YOUR MAC. YOUR NEXT PC. ONE WORKSPACE.
A fresh start.
One USB away.
Create a Windows installer on your Mac.
Get to know a PC with offline diagnostics.
Make your next USB do more.
v0.4.2 · Apple Silicon · macOS 26 or later
MADE FOR THE TASK AT HAND
Less setup.
More getting things done.
Practical tools for installing Windows and learning what’s inside a PC, brought together in one Mac app.
Review before you write.
Check the image, destination, and available space before erasing. Follow live progress through copying, verification, and ejection.
Creating media erases the selected USB.
A useful life for every USB.
Write raw disk images or restore a USB to everyday storage. A native sidebar keeps each job in its own workspace.
Windows installers are the primary validated writing path.
MEET QUICK SCAN 1.1
Boot. Scan. Save.
On to the next PC.
Prepare a diagnostics USB on your Mac, then boot an Intel or AMD PC. Quick Scan collects inventory and basic health readings, saves reports to the USB, and shuts down automatically after a successful save.
- CPU, GPU, RAM, and drive inventory
- SMART, NVMe, and battery readings when available
- Offline scans, with a separate report for every run
- Import saved reports in MACUS and export CSV
Separate download · Regular USB, 2 GB or larger
Extract the ZIP and keep the .img and .sha256 together.
FROM YOUR MAC TO A FRESH INSTALL
Three steps. One bootable USB.
Bring your Windows ISO and a USB with enough capacity. MACUS handles the installer preparation.
Choose your image.
Open Create installer and select or drop a Windows ISO. MACUS inspects it and applies the recommended settings.
Review your USB.
Select the destination and click Review & write. Back up anything on that USB before confirming the erase.
Write, then boot.
Wait for copying, verification, and ejection. Connect the USB to the target PC and choose its UEFI boot entry.
Built on your Mac. Booted on a PC.
A Windows x64 installer targets Intel/AMD PCs. Preparing it on Apple Silicon does not make it a bootable Windows installer for that Mac. No Windows ISO is included.
A FEW THINGS TO KNOW
Before you plug in.
Clear expectations make for a better first run.
Which Macs can run MACUS?
The published app requires an Apple Silicon Mac running macOS 26 or later. Download the DMG, open it, and drag Macus into Applications. Quit an older copy before replacing it.
Why MBR for a UEFI Windows installer?
MBR gives the USB a single FAT32 installer partition, avoiding the extra unused EFI partition created by macOS GPT formatting. Boot the USB in UEFI mode. Your internal Windows disk can still use GPT, and GPT remains an explicit USB option.
What happens to files larger than 4 GB?
Large sources/install.wim files are automatically split into .swm parts. Oversized ESD files and other files beyond FAT32’s limit are rejected before erasing; ESD conversion is not implemented.
Does Quick Scan certify a PC’s health?
It collects inventory and basic health readings. Unknown or untested data stays unknown. It does not certify hardware, Windows eligibility, or firmware enrollment. Quick Scan 1.1 has virtual boot and save tests; broader physical PC testing and Secure Boot compatibility verification remain pending.
Can I use multiboot, NTFS, or legacy Windows BIOS boot?
Multiboot is disabled. NTFS writing, legacy Windows BIOS boot, and full formatting are not implemented. See the current support and validation notes for details.
Where can I report an issue or read the source?
MACUS is developed in the public GitHub repository. Use GitHub Issues for reproducible bugs, and the security policy for security reports.
YOUR NEXT USB STARTS HERE
Ready when you are.
MACUS 0.4.2 · Apple Silicon · macOS 26+