Moving to a new Mac? Before taking these steps, you can use Migration Assistant to move your files from the old Mac to your new Mac.
- Tetriphys: The Thing That Should Not Be Mac Os Sierra
- Tetriphys: The Thing That Should Not Be Mac Os Catalina
Create a backup
Tetriphys: The Thing That Should Not Be. A downloadable game for Windows, macOS, and Linux. Tetriphys Mac OS.app.rar 16 MB. Tetriphys for Linux.zip 20 MB. Scripts.rar 8 kB. Tetriphys-PostCompo-Win64-patch1.rar 13 MB.
Make sure that you have a current backup of your important files. Learn how to back up your Mac.
Sign out of iTunes in macOS Mojave or earlier
If you're using macOS Mojave or earlier, open iTunes. From the menu bar at the top of the screen or iTunes window, choose Account > Authorizations > Deauthorize This Computer. Then enter your Apple ID and password and click Deauthorize.
Learn more about deauthorizing computers used with your iTunes account.
If you'd rather not let your Mac automatically update, you should periodically check to see if there is an update to your version. In High Sierra and earlier you can go to the Mac App Store. The Mac OS has been around for so long that there's a lot to discover if you know where to look. Now that you know about these hidden gems, you simply have to go try them. Follow the instructions above, then report back here to let us know which game you liked best. Step 1: Check Hard Disc name. Check to ensure the Hard Drive icon has a name to it. The name should not be all numbers but can have numbers in it as along as the name starts with a text character (s). There should be no special characters like, periods, commas, semi-colons, quotes, etc. Quit all applications. You must be at least 18 years old to be eligible to trade in for credit or for an Apple Gift Card. Not all devices are eligible for credit. More details are available from Apple’s Mac trade‑in partner and Apple’s iPhone, iPad, and Apple Watch trade‑in partner for trade-in and recycling of eligible devices. Restrictions and limitations.
Sign out of iCloud
If you're using macOS Catalina or later, choose Apple menu > System Preferences, then click Apple ID. Select Overview in the sidebar, then click Sign Out.
If you're using macOS Mojave or earlier, choose Apple menu > System Preferences, click iCloud, then click Sign Out.
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You will be asked whether to keep a copy of your iCloud data on this Mac. You can click Keep a Copy, because you're erasing your Mac later. Your iCloud data remains in iCloud and on any other devices that are signed in to iCloud with your Apple ID.
Sign out of iMessage
If you're using OS X Mountain Lion or later, open the Messages app, then choose Messages > Preferences from the menu bar. Click iMessage, then click Sign Out.
Reset NVRAM
Shut down your Mac, then turn it on and immediately press and hold these four keys together: Option, Command, P, and R. Release the keys after about 20 seconds. This clears user settings from memory and restores certain security features that might have been altered.
Learn more about resetting NVRAM or PRAM.
Optional: Unpair Bluetooth devices that you’re keeping
If your Mac is paired with a Bluetooth keyboard, mouse, trackpad, or other Bluetooth device that you plan to keep, you can unpair it. This optional step prevents accidental input when the Mac and device have separate owners but remain in Bluetooth range of each other.
If you're unpairing Bluetooth input devices from a desktop computer such as an iMac, Mac mini, or Mac Pro, you must plug in a USB keyboard and mouse to complete the remaining steps in this article.
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To unpair a Bluetooth device, choose Apple menu > System Preferences, then click Bluetooth. Move your pointer over the device that you want to unpair, then click the remove (x) button next to the device name.
Erase your hard drive and reinstall macOS
The best way to restore your Mac to factory settings is to erase your hard drive and reinstall macOS.
After macOS installation is complete, the Mac restarts to a setup assistant that asks you to choose a country or region. To leave the Mac in an out-of-box state, don't continue setup. Instead, press Command-Q to shut down the Mac. When the new owner turns on the Mac, the setup assistant guides them through the setup process.
No matter the model or condition, we can turn your device into something good for you and good for the planet: Learn how to trade in or recycle your Mac with Apple Trade In.