If your Apple can't boot, and you've made your backup as described in parts 1 and 2, you can still restore your computer without your OS X disc. Download a PowerPC version of Ubuntu, and burn the.iso to disc with ImgBurn for Windows, Disk Utility on OS X, or the Nautilus file manager in Linux. How to Backup iPhone & iPad to an External Hard Drive with Mac OS X This works the same with all versions of Mac OS X, all types of iOS devices with versions of iOS, and all versions of iTunes, since the location of the iOS backup files has stayed the same on the Mac. Advertisement Sometimes your Mac might act strangely for no apparent reason: lights won’t work correctly, volume settings are messed up, the display resolution will change, or maybe your Mac won’t boot at all. You can solve some problems by closing all your apps and trying to restart the computer. Sometimes, though, you’ll need to reset the SMC, and PRAM or NVRAM. ![]() Let’s take a look at how to do each of them. What Is the SMC in a Mac? The system management controller—or SMC—is a chip in Intel-based Macs. It’s involved in running a lot of the physical parts of the machine, including LED indicators, keyboards and other peripherals, cooling fans, and power buttons. It also plays a role in the behavior of your hard drive, how your Mac behaves in sleep mode, and the power supply. When Should You Reset SMC? SMC is responsible for so many functions in a Mac that it’s worth resetting whenever you find your computer’s hardware acting in unexpected ways. Here’s a list of the main symptoms that you need to reset the SMC: • The battery or status lights behave strangely • The keyboard backlight doesn’t work properly • Your MacBook doesn’t turn on when you open it • The power adapter light doesn’t reflect what it’s doing • The fan is running at an abnormally high rate, especially under low load • The • Your computer won’t connect to Wi-Fi • Target display mode switches on or off unexpectedly • App icons bounce for an extended period of time when opening • Your computer runs slowly, even under low CPU load • Does your Mac take forever to shut down? Try these tips to troubleshoot slow macOS shutdowns. Resetting the SMC is also one of the recommended If your Mac won't turn on, don't despair. Our guide to troubleshooting MacBook and iMac boot problems will get you running again. How to Reset SMC on a Mac There are a few different ways to reset the SMC, depending on what kind of Mac you’ve got. The method to reset a MacBook Pro is different from that of an iMac, for instance. Before you begin, try closing all your open apps and restarting your computer. That can fix a lot of problems on its own. Reset SMC on a MacBook Image Credit: To reset the SMC on a MacBook with the Apple T2 Security Chip (models from 2018 or later): • Shut down your Mac. • Press and hold the power button for 10 seconds, then restart. • If that doesn’t fix the problem, turn the Mac off again. App for dimming machine. • Press and hold the right Shift key, the left Option key, and the left Control key for seven seconds. How to install autodesk autocad for mac educator. • Keep these keys pressed while you press and hold the Power button for seven seconds. • Release all the keys and wait a few seconds. Now restart your MacBook. To reset the SMC on a MacBook with a non-removable battery (mostly pre-2018). • Shut down your Mac. • Press and hold Shift, Control, and Option on the left side of the keyboard. Now press and hold the Power button (or Touch ID button) as well. • Hold all the keys down for 10 seconds. • Release all the keys and turn on your MacBook. To reset the SMC on an older MacBook with a removable battery (mostly pre-2015): • Shut down your Mac. • Remove the battery. • Press and hold the power button for five seconds. • Reconnect the battery and turn on your MacBook. Requirements for sierra mac os.
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