Create any bootable macOS

DOWNLOAD YOUR MACOS The installer for macOS Monterey, macOS Big Sur, macOS Catalina, macOS Mojave, or macOS High Sierra downloads to your Applications folder as an app named Install macOS [version name]. If the installer opens after downloading, quit it without continuing installation as this download will be needed for your bootable macOS creation. WHY CREATE Read more…

Create bootable Big Sur disk


At some point you may wish to perform a full clean install of your macOS, which maybe Big Sur or an older system version like Catalina.
For most people a handy utility like DiskMaker X is an useful option, however not working anymore and never will be for Big Sur. Apple increased security levels in Big Sur which makes it harder or impossible for third party software to enter parts of the system.


Below a manual creation is described in order to create a bootable Big Sur installer:

Download macOS

  • Download: macOS Big SurmacOS CatalinamacOS Mojave, or macOS High Sierra 
    These download to your Applications folder as an app named Install macOS [version name]. If the installer opens after downloading, quit it without continuing installation. To get the correct installer, download from a Mac that is using macOS Sierra 10.12.5 or later, or El Capitan 10.11.6. Enterprise administrators, please download from Apple, not a locally hosted software-update server.
  • Download: OS X El Capitan
    This downloads as a disk image named InstallMacOSX.dmg. On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. It installs an app named Install OS X El Capitan into your Applications folder. You will create the bootable installer from this app, not from the disk image or .pkg installer.



Make a bootable Monterey disk



This post will explain how to build your own bootable Monterey USB disk!

This post will explain how to : ‘create bootable Monterey USB disk’.  A bootable disk is a much more convenient procedure to use than the ‘recovery mode’ . Recovery will not always start with the latest build or version of Apple’s software as this also depends on your hardware used. ( production year ). You may startup with Mojave, Big Sur depending on your used system and then proceed  with some software updates which should end up in an equal system state as a straightforward installed bootable system disk . However I feel that any mayor software update
will leave some traces of the upgraded software in your Mac’s system.


How Do I Boot Into Recovery Mode?

Booting into Recovery Mode is only a few steps away, providing you know what to press. Here’s how to boot into Recovery Mode on an Intel-based Mac.

  1. Click the Apple logo on your desktop. (menubar left corner)
  2. Click Restart. (from the menubar menu)
  3. Immediately hold down the Command and R keys until you see an Apple logo or spinning globe appear.
  4. Choose from the Recovery Mode utility options. These include Restore from Time Machine Backup, Reinstall macOS, Get Help Online or Disk Utility.