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- #Macos catalina install mac os x
- #Macos catalina install install
- #Macos catalina install update
- #Macos catalina install download
The above process took 20-30 minutes using my Kingston USB 2.0 flash drive.
#Macos catalina install install
Install media now available at "/Volumes/Install macOS Catalina"
![macos catalina install macos catalina install](https://www.andrewdenty.com/blog/assets/img/macos-new-ui/general/desktop-macos-catalina-big-sur-comparison.jpg)
The output will look like:Įrasing disk: 0 %. The “createinstallmedia” program will erase the USB flash drive, create a new partition named “Install macOS Catalina”, and copy the installation files to that partition. No worries because the process will resume when the Mac wakes. If your Mac sleeps, the createinstallmedia process will pause.
#Macos catalina install mac os x
Use a more recent macOS version (at least Mac OS X 10.11 El Capitan) or manually create the USB installation drive using instructions from Bootable USB Flash Drive to Install Mac OS X 10.10 Yosemite. If the createinstallmedia command returns a “Failed to start erase of disk due to error (-9999, 0)” error, then your current Mac OS X version does not fully support the createinstallmedia tool.If you use a relative path, such as changing to the Resources directory and using “./createinstallmedia”, the command will hang immediately, even before asking you if you wish to continue to erase the USB flash drive. The path to the createinstallmedia command needs to be an absolute path from the root directory.# You will be prompted for your user's administrative password. Sudo /Applications /Install\ macOS\ Catalina.app /Contents /Resources /createinstallmedia -volume /Volumes /Catalina # The -volume value is the mounted USB flash drive partition in this case, named /Volumes/Catalina To create a bootable USB macOS Catalina installer, run the “Terminal” application and this command: (USB 2.0 and large capacity drives may take longer.) After the format completes, the partition will be mounted under “/Volumes/Catalina” (or whatever name you selected above). The format operation may take several minutes to complete.Click the “Erase” button in the warning popup dialog if you get one. Click the “Erase” button at the bottom.If available, select “Master Boot Record” for “Scheme”.Select “Mac OS Extended (Journaled)” for “Format”.Input a name like “Catalina” (this name will be overwritten later).Click on the “Erase” tab (or button at the top).On the left-hand pane, select the USB drive (not the partition under it, if any).Plug the USB flash drive into your Mac.If the USB flash drive is not already formatted as “Mac OS Extended (Journaled)”, format it like so: You don’t need to delete the existing content on the drive because we will blow it all away in a subsequent step. For example, you can move the “Install macOS Catalina” application to the “~/Downloads” directory and run it from there.īecause macOS Catalina is 8.4GB in size, you will need a 16GB USB flash drive.
#Macos catalina install update
Note: If you plan to run the installer first to update your current macOS version to Catalina, you will want to move the “Install macOS Catalina” application out of the “/Applications” directory otherwise, the installer will delete itself from the “/Applications” directory when the upgrade completes. If the installer automatically launches, just close it.
![macos catalina install macos catalina install](https://g6k7x4j6.stackpathcdn.com/wp-content/uploads/2020/01/Start-Catalina-Virtual-Machine.png)
It will be saved to the “/Applications/Install macOS Catalina” location.
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#Macos catalina install download
Go to the Mac App Store, search for “macOS Catalina”, and download it. (The Mac mini came with macOS 10.14 Mojave so I used it to download Catalina.) You will need a Mac to download macOS Catalina you can download Catalina from The Mac Go. Note: The instructions below are the same for macOS 10.13 High Sierra and macOS 10.14 Mojave. I purchased a used 2018 Mac mini desktop and wanted to put a fresh installation of the latest macOS 10.15 Catalina on it.