Diskmaker X 9 Os Catalina Download The MacOS

If you have complete bootable clone of your drive on which everything is working, why would you need a separate install drive Couldnt you just do a clean install using the Catalina installer on the main drive.

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While I was able to reload my MacBook from the bootable backup drive, I know that its always good practice to have one drive a cheap flash or hard drive that can be booted for one purpose, that of doing a clean install of macOS.

Diskmaker X has been my tool of choice for making bootable install drives for years, and in this article, Ill show how to create one for macOS Catalina.

With a blank external hard disk or flash drive at your fingertips, follow these instructions.

Note that the developers of the app also have DiskMaker X versions available back to Mac OS X 10.7 Lion, which is helpful if you wish to load older Macs with their original operating system versions.

You can also create a single drive with installers for every Mac operating system back to Lion.

Once youve located the installer, double click it to mount the disk image.

Diskmaker X 9 Os Catalina Download The MacOS

Before you launch DiskMaker X 9, you need to download the macOS Catalina installer.

A USB Flash Drive is usable, although slow, as long as it has at least 8GB of capacity.

DiskMaker X is added to the list of apps that can control your Mac (see screenshot below).

Attach the drive to the Mac, make sure that the drive is visible from the Finder (in some cases a drive icon may appear on the Desktop), then launch DiskMaker X 9.

If youve kept older macOS installers in your Applications folder, DiskMaker X asks which version of the operating system you want to use to make a boot disk.

Select the version in this case, macOS Catalina (10.15) and then the following dialog appears.

Continuing, DiskMaker X 9 asks for the type of disk youre using.

In this example, I am using an OWC Mercury Elite Pro mini drive, so I click Another kind of disk (erase only partition).

If everything is the way you wanted, click the highlighted button (see image below).

You are also asked to give permission to DiskMaker X 9 to access files on a removable volume (your bootable install disk), so click OK when prompted as seen below.

You can do that later if you want to use the same bootable install disk as a Time Machine backup drive.

If youre running a virus protection app, it may ask if you wish to scan the disk; be sure to tell it to leave your disk alone.

At that point, you can reboot your Mac while holding down the Option (Alt) key to select a boot drive, or use System Preferences Startup Disk to set the drive you just created as the boot drive.

All posts by Steve Sande Be Sociable, Share This Post Steve Sande January 19, 2020 previous article How to Enable and Disable Favicons in macOS Catalina next article OWC RADiO: Larry OConnor Psyched About OWC Gear at CES.

I have already upgraded to Catalina, and DO NOT want to go thru the download again.

Diskmaker X 9 For Macos Catalina