Bootable USB from HFZ DMG for Intel T2 MacBooks
- macOS Catalina
- macOS Big Sur
- macOS Monterey
Step 1: Mount the DMG
- Download the macOS DMG file.
- Double-click the DMG file to mount it.
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Step 2: Format the USB
- Open Disk Utility.
- Select the USB drive.
Erase it using these settings:
Format: macOS Extended (Journaled)
Scheme: GUID Partition Map
Warning:
This will erase the USB drive.
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Step 3: Restore the DMG to USB
- Open Terminal.
- Use this command:
OPTION 1: sudo asr restore -source /Volumes/YourDMG -target /Volumes/YourUSB -erase -noverify
Change:YourDMG = mounted DMG volume name (Use the name shown in Finder or Disk Utility )
YourUSB = USB drive name
If that didn’t work,
try OPTION 2:
sudo asr restore -source "/Volumes/macOS Base System" -target /Volumes/MyVolume -erase -noverify
Change:MyVolume = USB drive name
Do not unplug the USB while restoring.
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Step 4: Boot from USB
- Connect the USB installer.
- Restart the MacBook.
— Hold Option / ⌥ during startup.
— Select the USB installer.
— Press Enter.
— If using OpenCore, press Space if needed to show extra boot options.
