To use any of these key combinations, press and hold the keys immediately after pressing the power button to, or immediately after your Mac begins to restart. Keep holding until the described behavior occurs. If your Mac is using a, all of these key combinations are disabled, except as noted below. Command (⌘)-R: Start up from the built-in system.
Mac OS X includes a number of special keys that you can use during the boot process. These keys really come in handy when you need to force your operating system to do something that it normally wouldn’t, such as boot from a CD instead of the hard drive. How to Use Startup Keys to Resolve Mac OS X Boot Problems. The major update to Apple's Mac OS X, is no more OS X 10.12, instead, it's named macOS Sierra. The brand-new desktop operating system comes with Auto Unlock, Optimized Storage, Siri, Universal Clipboard and many more. But as is the case with each Mac operating system update, some users will. For Java versions 6 and below, Apple supplies their own version of Java. For Mac OS X 10.6 and below, use the Software Update feature (available on the Apple menu) to check that you have the most up-to-date version of Java 6 for your Mac. For issues related to Apple Java 6 on Mac, contact Apple Support. Starting with Chrome version 42.
Or use Option-Command-R or Shift-Option-Command-R to start up from macOS Recovery over the Internet., depending on the key combination you use while starting up. If your Mac is using a, you're asked to enter the password. Option (⌥): Start up to, which allows you to choose other startup disks or volumes, if available. If your Mac is using a, you're asked to enter the password. Option-Command-P-R: or PRAM. If your Mac is using a, it ignores this key combination or starts up from macOS Recovery. Shift (⇧): Start up in. D: Start up from the built-in or utility, depending on your Mac model.
Or use Option-D to start up from this utility over the Internet. N: Start up from a compatible, if available.
To use the default boot image on the NetBoot server, hold down Option-N instead. Don't support this startup key. Command-S: Start up in. This key combination requires. T: Start up in. Command-V: Start up in.
Eject (⏏) or F12 or mouse button or trackpad button: Eject removable media, such as an optical disc.
The major update to Apple's Mac OS X, is no more OS X 10.12, instead, it's named macOS Sierra. The brand-new desktop operating system comes with Auto Unlock, Optimized Storage, Siri, Universal Clipboard and many more. But as is the case with each Mac operating system update, some users will painfully encounter a slew of problems/issues, like download error, Mac compatibility issue, failed, install stuck, slow Mac performance etc. This list of macOS Sierra problems and solutions will show you how to fix the most common problems with MacBook, iMac and other Apple computers after uploading to the new OS. The latest macOS Mojave announced on WWDC 2018 is available for download on Monday 24 September. It comes with unique dark mode, all-new Mac app store, screenshot, continuity camera, Finder update, desktop stacks, Safari favicons and more.
It might not totally change the way you use your Mac, but will speed up parts of your workflow, help keep your files organized, and make you smile with customizable touches. Thus a great number of Mac users can't wait to for faster and smoother workflow. Apple announces the latest on WWDC June 5, 2017. It comes with updates to Safari that help block site trackers and video autoplaying etc.
The newly, it added the new photo-editing tools like Curve, with better filtering to sort photos by keywords and faces.Also an updated file management system will be a part of this updates as well, which speeds up directorycloning with native encryption. On the graphics end, it supports HEVC and VR,and the Metal 2 not only takes the visual experience to the next level, but also adds capabilities like machine learning, virtual reality, and external GPU support for entertainment and professional creative apps. ITunes 12.5 not responding Problem Also some users get stuck at the second step: macOS Sierra issues with first boot up. If your gets a white screen with an Apple logo after OS update, here is how to fix the update problems with white screen on reboot: 1. Restart your Mac. Start iTunes in Safe Mode to troubleshoot this error. Update iTunes to the latest version 12.5.
Turn off Wifi - go to iTunes menu - Store - Sign Out - turn on Wifi and open iTunes again. Reinstall iTunes again. Some users will suffer a setback at the first step as they have problems with macOS Sierra installation/download.
The installation freezes at 30 minutes on MacBook, it gets stuck on install at 90%, stuck on grey screen. If you have any problems updating from El Capitan on MacBook Air/Pro, iMac, try the fixes below: 1. Get rid of any antivirus software installed on your Mac. Make sure you have created a Time Machine backup on hard drive. Press the power button and hold down the Shift key. Try updating software in Safe mode.
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Switch from wireless connection to hardwired connection. If you also encounter similar iOS 10 update issues, follow to solve here.
MacOS Sierra won't start up after update After successfully installing macOS Sierra without problems, some users get stuck at the reboot: macOS Sierra issues with first boot up. Some MacBook/iMac get a white screen with an Apple logo, while some other boots get stuck on black screen. It you stuck on black screen or Apple logo, here is how to fix macOS Sierra update problems with white screen on reboot: 1. Restart the Mac and hold down Command, Option, P and R to reset the NVRAM. Reset the System Management Controller: shut down Mac unplug all cables from Mac wait for several minutes and plug the cables start up the Mac 3. Try to boot Mac in Safe Mode and make sure you Mac has at least 9 GB of free space. To avoid any problems updating from, remove all third-party Kexts and extensions.
Mac apps can't be opened or damaged Many users complained that they are getting app is 'damaged and can't be opened' error when they try to run an app, some of them have trouble with photo app, some with mail apps, some others with third-party apps like. If you are told the app 'is damaged and can't be opened', try the solutions to macOS Sierra issues below: 1. Empty caches.
Reset PRAM at startup. 3.Remove plugins, for example for Mail apps, remove Mail plugins installed in /Library/Mail/Bundles and /Library/Mail/Bundles.
Hold down 'option + command' when you laugh the app. Try the 'Allow applications downloaded from: Anywhere' setting in the 'Security & Privacy' System Preferences. Slow macOS Sierra performance 'My Mac runs very slow after updating to macOS Sierra, it's supposed to make my Mac run faster.' It's really annoying to have slow performance problems updating from El Capitan to macOS Sierra, but not a few users are crying about the new macOS running slow issues 'Word, Safari, Preview, and iTunes wouldn't open- they froze and I had to force quit'. Also macOS 10.13 update will give you the same challenge.
If you unfortunately have the macOS Sierra or, here are some solutions to macOS Sierra: 1. If everything on Mac is slow, first try to restart Mac to see if it helps. Reduce RAM usage or upgrade RAM to make the computer run faster.
Try to delete log file manually in the following folder (Command + Shift + G): /Library/Containers/com.apple.mail/Data/Library/Logs/Mail/. Repair disk permissions with Disk Utility. Run SMC and PRAM resets on Mac. Slow Wi- Fi Users who have upgraded to the new operating system frustratedly find that the Wi- Fi on Mac gets extremely slow. 'After installing macOS 10.12, my Wi-Fi is so so so so so slow.' If your Wifi connection is poor or dropping frequrently, you're not alone. Check the slow Wifi problems and solutions for MacBook Air/Pro, iMac below: 1.
Delete the current Wi-Fi preferences: Create a new folder Turn off Wi-Fi hit Command+Shift+G to get Go to Folder command, and choose the following path:. com.apple.airport.preferences.plist.
com.apple.network.identification.plist. com.apple.wifi.message-tracer.plist. NetworkInterfaces.plist.
preferences.plist Move them to the new-created folder and reboot Mac. Power off/on your router and check if it needs any firmware updates. Reboot your Mac in Safe mode and reboot it again. Deselect Proxies: System Preference Network Advanced Proxies Tab; under 'Select Protocol', uncheck any box if checkmarked; click 'OK' then 'Apply'. Turn off Bluetooth. Fix to Problems with macOS Sierra Playing Certain Video Formats After successfully update to macOS Sierra, users will still have issues with Fuji playback videos in certain formats in QuickTime like mkv, flv, mts, wmv, avi etc.
To fix the problems with video playback, you can follow the suggestions below. Turn to a video converter like, which is so far the fastest video converter for Mac. It solves videos not playing on macOS Sierra issues on MacBook Air/Pro, iMac etc by converting among almost all the 4K/HD/SD video formats without losing quality. Bluetooth Not Available When you try to transfer file via Bluetooth on MacBook Air, MacBook Pro or iMac, only to get a message stating 'Bluetooth not available'. This is also one of the most-common problems with macOS Sierra update. When you run into Bluetooth not working problem, let's fix it: 1.
Delete Bluetooth Preferences: In OS X Finder, press Command+Shift+G find type /Library/Preferences/ find com.apple.Bluetooth.plist delete the file and shut down Mac. Reset SMC & Power Functions. Power off the system, disconnect all peripherals, and power on after 2-5 minutes. Fast battery drain Some users are having bad battery life problems updating from El Capitan to macOS Sierra. '100% charged battery drains fast on Sierra for 2 - 3 hours only. Before the mac OS Sierra upgrade, it could stay for 8-9 hours,' as an Mac user complains. If you have installed macOS Sierra and noticed that the battery life drains very fast on MacBook Air/Pro, iMac etc, this may be because that the Spotlight uses more power.
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Here are several solutions to the problems with bad battery life: 1. Turn Off Spotlight Indexing as it keeps using significant battery. Switch browser to Safari from other third-party browsers. Adjust the Energy Saver settings. Check your Wi-Fi settings and disable Bluetooth.
Reducing screen brightness. Reset the System Management Controller. Some users also report iPhone fast battery drain, here's.
Mail problem Following the upgrade, some users experience mail not working problems on macOS Sierra, including mail won't open, mail can't verify account name and password, can receive but can't send email or mail crashes problems. To fix macOS Sierra update problems with mail, try: 1. Deleting the email account in preferences, and creat a new account to see if that fixes the issue. Go to Preference and select Accounts select Account Information find SMTP Server select option 'edit STMP server list' reset all the settings in the list.
Uncheck mail extensions at Mail Menu Preferences select Extensions. External hard drive/SD card not showing 'I did the macOS Sierra upgrade and since then - my two external disks won't show up! They don't show up in Finder, Disk Utility or on the command line.' Many other users are suffering from problems updating to macOS Sierra with their external hard drive or SC card, like disk not ejected properly, external hard drive not mounting. Solutions to the macOS 10.12 problems are as follows: 1. Restart Mac (remove SD card and unplug hard drive before you restart) to see if it fix this common macOS Sierra problem. Try to mount the Hard Drive in OS X Finder.
Try third party drovers, TEXERA NTFS and PARADON NTFS to connect the external disks to Mac system. Try to reset the SMC and the PRAM on your Mac. Freezing/crashing using Safari 'My MacBook Pro has been randomly freezing and sometimes crashing during normal operation and while using Safari, annoying.' It's one of the most common issues with macOS Sierra, the updated Mac keeps freezing and crashing. To solve macOS Sierra update frozen problem, try solutions below: 1.
Clearing the Safari history and cache: find Library./Caches/com.apple.Safari/Caches.db and move it to the trash. Temporarily switch Safari to third-party browser such as Chrome, Firefox etc.