This article was co-authored by How.com.vn staff writer, Darlene Antonelli, MA. Darlene Antonelli is a Technology Writer and Editor for How.com.vn. Darlene has experience teaching college courses, writing technology-related articles, and working hands-on in the technology field. She earned an MA in Writing from Rowan University in 2012 and wrote her thesis on online communities and the personalities curated in such communities.
This article has been viewed 42,884 times.
Learn more...
Starting with macOS Catalina, Sidecar is no longer available to turn your iPad into a second monitor since it was removed in this update. This How.com.vn teaches you how to enable Sidecar on macOS Catalina. To use Sidecar normally (like with Big Sur), choose the option from the AirPlay menu in the menu bar at the top of your screen.[1]
Things You Should Know
- Although Sidecar is no longer available beginning with macOS Catalina, you can still enable it by typing commands into a Terminal window.
- Once you enter the commands to enable Sidecar on your newer Mac, you'll have the Sidecar option in your System Preferences panel, in which you can configure your iPad as a second monitor.
Steps
- Connect your iPad to your Mac with a cable. Your iPad should have come with a lightning to USB cable that you'll want to use. The lightning port is at the bottom of your iPad and the USB port on your computer is either on the back or sides of the monitor.
- Open Terminal. You can find it in the Utilities folder in Finder, or by pressing Cmd + Spacebar to open Spotlight.Advertisement
- Enter the following code.
defaults write com.apple.sidecar.display AllowAllDevices -bool true; defaults write com.apple.sidecar.display hasShownPref -bool true; open /System/Library/PreferencePanes/Sidecar.prefPane
- Press Return. This will run the command you typed into Terminal. Typos will return an error, so if you don't get the result you want, you'll need to type it in again.
- If prompted enter your password.
- You'll know if this code was successful if your System Preferences opens with an option for "Sidecar."[2]
Expert Q&A
Tips
- If you're using Big Sur and having trouble connecting to your iPhone or iPad via Sidecar, reset the Bluetooth connection between your devices, then connect your iPad or iPhone to your Mac with a cable and change the visibility setting to "Show while connected WiFi" from your Mac (Finder > your iPad/iPhone > General > Options). Then go to Preferences > Sidecar > "Connect to…" > Your iPhone/iPad.[3]Thanks
- If the method using Terminal does not work for you, you can always pay for the third-party app called Duet Display that has a high rating and is very popular.Thanks
References
About This Article
Is this article up to date?
⚠️ Disclaimer:
Content from Wiki How English language website. Text is available under the Creative Commons Attribution-Share Alike License; additional terms may apply.
Wiki How does not encourage the violation of any laws, and cannot be responsible for any violations of such laws, should you link to this domain, or use, reproduce, or republish the information contained herein.
- - A few of these subjects are frequently censored by educational, governmental, corporate, parental and other filtering schemes.
- - Some articles may contain names, images, artworks or descriptions of events that some cultures restrict access to
- - Please note: Wiki How does not give you opinion about the law, or advice about medical. If you need specific advice (for example, medical, legal, financial or risk management), please seek a professional who is licensed or knowledgeable in that area.
- - Readers should not judge the importance of topics based on their coverage on Wiki How, nor think a topic is important just because it is the subject of a Wiki article.