Plug the bootable installer into a Mac that is connected to the internet and compatible with the version of macOS you're installing.

And if your Mac is experiencing problems, a bootable installer drive makes a handy emergency disk. If you want to erase the drive on a Mac before installing El Capitan, or start over at any time, you can use a dedicated installer drive to boot that Mac, erase its drive, and then install the OS (and subsequently restore whatever data you need from your backups). If you need to install El Capitan on multiple Macs, using a bootable installer drive is faster and more convenient than downloading or copying the entire installer to each computer. In other words, you no longer have the same safety net or convenience.īecause of this, I recommend creating your own bootable El Capitan (OS X 10.11) installer drive on an external hard drive or USB thumb drive. But to install or reinstall a recent version of OS X, you must either download a non-bootable installer from the Mac App Store or (via OS X’s invisible, bootable recovery partition) download 6GB of installer data from Apple’s servers during the installation process. When OS X shipped on a DVD a good number of years ago, you always had the convenience of a bootable installer-an OS X installer that could be used to boot your Mac if its own drive was having problems. It has been updated to support High Sierra, Catalina, and Big Sur. So, There’s a free app called Install Disk Creator that you can use to make the installation drive. It is a free tool that helps to create a bootable USB mac OS Installer within few Clicks.I have used a software named TransMac to make a installation USB in windows following the steps in the link below: I used this link. Unfortunately, macOS has crashed on my Mac and now I need to install it again. I have downloaded and saved macOS Mojave installation file from the Mac App Store into my external hard drive.Since it has created with AppleScript it can support many versions of OS X macOS to create a bootable USB Installer. Diskmaker x 6 is an open source application which has built with AppleScript.

MacOS Sierra bootable USB, DiskMaker X 6 is another Application which allows you to create bootable USB on a Mac.

This means a lot of daily and advanced tasks on Mac can be done via text commands such as creating bootable USB installer for Mac. MacOS (formly named Mac OS X) is just a variant of popular Unix based operating system. Method 3: Create macOS Bootable USB Drive on Windows Method 1: How to Create Bootable USB Installer for Mac via Commands.

How to make a bootable usb os x