In this article we will show you how to Run 64-Bit Only Mode Mac. In fact, if you don’t mind going to the command line, you can make your Mac run only in 64-bit mode. The last version of the Mac OS that can run 32-bit software is the one that came before macOS Catalina. Only 64-bit apps will be able to run on Catalina. If you want to know more information about this Visit Official Apple Support site.
This is really for advanced Mac users who want to test compatibility for a specific reason. Most new Mac users will find that turning on 64-bit only mode will cause problems with their current software, so most people shouldn’t try 64-bit only mode. For most Mac users, it’s enough to find 32-bit apps on their Mac, update them when possible, and understand what it means that future versions of Mac OS won’t support 32-bit apps.
How to Run 64-Bit Only Mode Mac
Again, if you’re just starting out with your Mac, you probably don’t need to try 64-bit compatibility. Here’s how to turn on 64-bit mode for developers, system managers, and power users:
- Launch Terminal, which is found is in the Utilities directory inside of the Applications directory (/Applications/Utilities)
- Type the following command string exactly as it is written in the screenshot below, then press Return. You’ll be asked to be authenticate as root user to execute the command, so enter your password when prompted and press Return again
sudo nvram boot-args="-no32exec"
- Restart the Mac
- When the Mac is restarted, none of the 32-bit apps, web plugins, selection panes, software components, or background tasks and processes will run.
- If you try to open a 32-bit app when your Mac is in 64-bit mode, the app won’t open and will show a message that it can’t be started.
FAQs
Apple stopped supporting 32-bit apps in macOS Catalina, and Mojave was the last version of macOS to do so. Only 64-bit apps can be installed on Ventura, Monterey, Big Sur, and Catalina, which isn’t a problem for most people because most big software is now 64-bit.
From the Apple menu, choose About This Mac, then click the System Report button to see if an app is 32-bit or 64-bit. Scroll down on the system report until you see Software in the sidebar, then click on Applications. When you choose a specific app, you will see an area called 64-bit (Intel).
Apple technologies like Metal only work with 64-bit apps. If Apple wants to make sure that Mac apps have all of the latest improvements and optimisations, it needs to stop supporting 32-bit. In the most basic words, 32-bit apps don’t work well.
Apple has been helping developers change their apps, and in 2018, it told them that macOS Mojave would be the last version of macOS that could run 32-bit apps. As of macOS Catalina, 32-bit apps can no longer be used on macOS.