

MacOS Catalinas inbuilt Disk Utility provides an option to select a mounted storage drive be it internal or external SSD/HDD and create a disk image (.DMG) file to a location other than the source disk. Click Upgrade now and the download should begin. Create a Disk Image Using Disk Utility on macOS Catalina. Go to Settings > Software Updates and let your Mac show you the latest update. Keep your Mac plugged-in during the process. Remember to back up your data before you begin.
Create mac bootable disk from iso file windows how to#
Your reasons may wary, but in this quick tutorial, I will share how to make a bootable installer for macOS Monterey.


This practice, or should I rather say tradition, has been in place since the first MacBook Air I bought. It also acts as a recovery disk for your Mac, in case you need it in future.įor me, major macOS update released usually once a year brings an opportunity to wipe-off my Mac and do a fresh installation. By making a bootable macOS Monterey installer on an SD card or pen drive, you can use the same installer on multiple computers. It’s also not so reliable, as I had to download the update three times before I could finally begin the installation. The latest macOS, version 12.0.1, is around 12GB so downloading it multiple times for each of your Mac can be a long process. But if you are planning on updating multiple Macs and/or wish to wipe off your Mac and perform a fresh macOS installation, having a bootable installer will save you plenty of time and efforts. The update can be installed from Settings > Software Update as usual. MacOS Monterey, the latest version for Apple’s desktop and laptop operating system is out now.
