Dec 26, 2017 Step Three: Reinstall macOS. With your information wipe complete, you are now ready to reinstall macOS. If you booted from a functioning recovery partition, click the “Reinstall macOS” button. The installation process will begin. If you booted from an. Apr 15, 2014 Continue to keep these buttons held until you hear the Mac startup chime twice. After the second chime, let go of the buttons and let your Mac restart as normal. No user data will be lost in this process. Resetting your PRAM will not only fix this particular OS X install issue, but it can also fix network issues, sound issues, and display issues. If you have a problem with your Mac and need to reinstal the operating system you should be able to simply reinstall macOS (or Mac OS X) via the Recovery partition. In this article we'll look at. Jun 18, 2015 I tried, from the App Store as you say, but I get a message saying that it can't be downloaded because it's already installed. I've bitten the bullet and signed in with my AppleID to reinstall Yosemite. I'm hoping that when El Cap comes out, she won't have any issues upgrading the OS.we'll see I.
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If OS X El Capitan came preinstalled on your new Mac, you’ll probably never need this article until you decide to sell it. At that time, it’s a good idea to erase the disk and install a fresh copy of OS X for the next owner.
If you’re thinking about reinstalling because something has gone wrong with your Mac, know that an OS X reinstallation should be your last resort. If nothing else fixes your Mac, reinstalling OS X could well be your final option before invasive surgery (that is, trundling your Mac to a repair shop). You don’t want to reinstall OS X if something easier can correct the problem. So if you have to do a reinstallation, realize that this is more or less your last hope (this side of the dreaded screwdriver, anyway).
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In this article, you discover all you need to know to install or reinstall OS X, if you should have to.Reinstalling is a hassle because although you won’t lose the contents of your Home folder, applications you’ve installed, or the stuff in your Documents folder (unless something goes horribly wrong or you have to reformat your hard drive), you might lose the settings for some System Preferences, which means you’ll have to manually reconfigure those panes after you reinstall.
And you might have to reinstall drivers for third-party hardware such as mice, keyboards, printers, tablets, and the like. Finally, you might have to reregister or reinstall some of your software.
It’s not the end of the world, but it’s almost always inconvenient. That said, reinstalling OS X almost always corrects all but the most horrifying and malignant of problems. The process in El Capitan is (compared with root-canal work, income taxes, or previous versions of OS X) relatively painless.
How to install (or reinstall) OS X
In theory, you should have to install El Capitan only once, or never if your Mac came with El Capitan preinstalled. And in a perfect world, that would be the case. But you might find occasion to install, reinstall, or use it to upgrade, such as
- If your Mac is currently running any version of OS X except El Capitan
- If you have a catastrophic hard-drive crash that requires you to initialize (format) or replace your boot drive
- If you buy an external hard drive and want it to be capable of being your Mac’s startup disk (that is, a bootable disk)
- If you replace your internal hard drive with a larger, faster, or solid state drive
- If any essential OS X files become damaged or corrupted or are deleted or renamed
- If you sell or give away your Mac
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The following instructions do triple duty: Of course they’re what you do to install OS X for the first time on a Mac or a freshly formatted hard or solid-state disk. But they’re also what you do if something really bad happens to the copy of OS X that you boot your Mac from, or if the version of OS X on your Mac is earlier than 10.10 El Capitan. In other words, these instructions describe the process for installing, reinstalling, or upgrading OS X El Capitan.
You must have Internet access to complete this procedure.
If you’ve never had El Capitan on this Mac, the first thing to do is visit the Mac App Store, download El Capitan (it’s free), and install it. Once you’ve done that, here’s how to install, reinstall, or upgrade to El Capitan, step by step:
- Boot from your Recovery HD partition by restarting your Mac while holding down the Command+R keys.The OS X Utilities window appears.
- Select Reinstall OS X, and click Continue.The OS X El Capitan splash screen appears.
- Click Continue.A sheet informing you that your computer’s eligibility needs to be verified by Apple appears.
- Click Continue to begin the process of installing or reinstalling OS X.If you’re not connected to the Internet, you’ll be asked to choose a Wi-Fi network from the AirPort menu in the top-right corner.The El Capitan software license agreement screen appears.
- Read the license agreement and click Agree.A sheet drops down, asking whether you agree to the terms of the license agreement.
- Click Agree again.Yes, you did just click Agree; this time you’re being asked to confirm that you indeed clicked the Agree button. If you don’t click Agree, you can’t go any farther, so I advise you to click Agree now.
- Choose the disk on which you want to reinstall OS X by clicking its icon once in the pane where you select a disk.If only one suitable disk is available, you won’t have to choose; it will be selected for you automatically.
- Click the Install button.A sheet asks for your Apple ID and password.
- Type your Apple ID and password in the appropriate fields, and click Sign In.Your El Capitan installation (or reinstallation) begins. The operating system takes 30 to 60 minutes to install, so now might be a good time to take a coffee break. When the install is finished, your Mac restarts itself.
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If you were reinstalling El Capitan on the hard disk that it was originally installed on, or upgrading from Mavericks, you’re done now. Your Mac will reboot, and in a few moments you can begin using your new, freshly installed (and ideally trouble-free) copy of OS X El Capitan.
If, on the other hand, you’re installing El Capitan on a hard disk for the first time, you still have one last step to complete. After your Mac reboots, the Setup Assistant window appears.
Getting set up with the Setup Assistant
Assuming that your installation process goes well and your Mac restarts itself, the next thing you should see (and hear) is a short, colorful movie that ends by transforming into the first Setup Assistant screen (Apple Assistants such as this are like wizards in Windows, only smarter), fetchingly named Welcome.
To tiptoe through the Setup Assistant, follow these steps:
- When the Welcome screen appears, choose your country from the list by clicking it once, and then click the Continue button.If your country doesn’t appear in the list, select the Show All check box, which causes a bunch of additional countries to appear.After you click Continue, the Select Your Keyboard screen appears.
- Choose a keyboard layout from the list by clicking it once, and then click Continue.If you want to use a U.S. keyboard setup, click the U.S. listing. If you prefer a different country’s keyboard layout, select the Show All check box; a bunch of additional countries’ keyboards (as well as a pair of Dvorak keyboard layouts) appear in the list. Choose the one you prefer by clicking it — and then click Continue.The Select Your Wi-Fi Network screen appears.
- Click the name of the wireless network you use to connect to the Internet, type its password, and then click Continue.If you don’t see the network you want to use, click Rescan.If you don’t use a wireless network, click Other Network Setup, and then choose one of the available options, or choose My Computer Does Not Connect to the Internet. Click Continue.The Migration Assistant (also known as the Transfer Information to This Mac) screen appears.
- Do one of the following:
- Choose to transfer data, and then click Continue.If this is a brand-new Mac or you’re installing OS X El Capitan on a Mac and have another Mac or Time Machine backup disk nearby, you can transfer all of your important files and settings by following the onscreen instructions and connecting the new and old Macs via FireWire or Ethernet cable.Transferring data can take hours — that’s the bad news.The good news is that once the data transfer finishes, you’re finished, too. In other words, you can ignore the steps that follow (which are only for brand new installations with no data to transfer).Goodbye and good luck.
- Choose not to transfer data, and then click Continue.The Enable Location Services screen appears. Location Services allows apps such as Maps and services such as Spotlight Suggestions to gather and use data including your approximate location.
- Select (or don’t select) the Enable Location Services on this Mac check box, and then click Continue.The Sign In with Your Apple ID screen appears.
- Do one of the following:
- If you want to use your Apple ID with this Mac, type your ID (such as [email protected]) and password in the appropriate fields, and then click Continue.
- If you don’t have an Apple ID or prefer not to use one with this Mac, click Don’t Sign In, and then click Continue.To learn more about getting an Apple ID, click the blue Learn More link. In a nutshell, an Apple ID lets you make one-click purchases at the iTunes Store, iPhoto, or the Apple Store, and includes free iCloud membership.
The Terms and Conditions screen appears. - Read the Terms and Conditions and click Agree.A sheet drops down to confirm your agreement.
- Click Agree again.The Create a Computer Account screen appears.
- Do one of the following:
- If you provided your Apple ID (in Step 6), select the Use My iCloud Account to Log In check box. Then fill in the Account Name (sometimes called Short Name).
- Fill in the Full Name, Account Name (sometimes called Short Name), Password, Verify Password, and Hint fields.
This first account that you create will automatically have administrator privileges for this Mac. You can’t easily delete or change the name you choose for this account, so think it through.You can’t click the Continue button until you’ve filled in the first two fields. Because a password is optional, you can choose to leave both password fields blank if you like. If you do, your Mac warns you that without a password, your Mac won’t be secure. If that’s okay, click OK. If you change your mind and want to have a password, click Cancel. - If you want a different picture, click the little picture to the right of your name (labeled “edit”) and do one of the following:
- To take a picture of yourself with your Mac’s built-in camera, click the Take Photo Snapshot button. Then click Continue.When the picture appears, you can change its size by using the slider control directly below the image and move it around in the frame by clicking your face and dragging. If you’re not happy with this snapshot, click Retake a Video Snapshot.
- To select a picture from the Picture library, click the picture you want to represent you — the butterfly, dog, parrot, flower, or whatever — and then click Continue.
- Click Continue to exit the Create a Computer Account screen. If you didn’t provide an Apple ID, skip to Step 13.If you provided your Apple ID in Step 6, the Set Up iCloud Keychain screen appears.
- Do one of the following:
- Click Set Up iCloud Keychain. When the screen requesting your passcode appears, type your four-digit passcode, and click Continue.If you’ve forgotten your passcode or don’t have one, click Forgot Code to Reset iCloud Keychain.A verification code is sent to your iPhone or other Apple device.
- Click Set Up Later.If you choose this option, skip to Step 14.
- Type the code in the verification field and then click Continue.
- Wait a few minutes while your user account is created and El Capitan is configured for you.The OS X Finder’s Desktop appears.
And that’s all there is to it. You’re done.
There’s nothing like that “fresh Mac” feeling, when everything is clean and running like new. A healthy Mac boosts productivity by working well and eliminating down time. How to achieve this wonderful state? There are three ways.
First, buy a brand-new Mac. It’s not the most economical option, but there it is. Second, perform a clean install of OS X. While buying a new Mac is expensive financially, a clean reinstall costs you time, as it’s a tricky process that requires attention and careful preparation. That brings us to number three.
The third option is more economical, safer, significantly simpler and comes in two parts. First, reclaim disk space by removing unwanted, troublesome files and two, perform routine maintenance to keep your Mac in tip-top shape. A utility like CleanMyMac X lets you do all of that quickly, effectively and best of all, without having to clean reinstall OS X.
In this article you’ll learn how to clean up your Mac and get it running beautifully. But first, I’ll look at performing a clean installation for those interested in that route. It’s burdensome, but possible. Here’s what you need to know about performing a fresh install of OS X.
Clean up your Mac with a fresh install — the drastic way.
Apple designs its Mac operating systems so that they can be installed “over the top”, which means all settings and user accounts will remain intact when you upgrade. For most people this works just fine, and is the recommended method. Those who still wish for a clean install must recognize that this means everything will be erased from their hard drive:
- The boot drive.
- User accounts.
- Your network settings and all software licenses.
- Photos, music, and documents.
That’s “everything” as in every last thing. If you’re still game, here’s what you need to know before doing a clean install of OS X El Capitan.
- This probably goes without saying, but make reliable backups of your entire boot drive in several ways.
- Move important files to an online storage service like Dropbox plus a local external drive.
- Note what has been backed up to your iCloud account, if anything, as well as how to recover it.
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With that done, you certainly can perform a clean install of OS X. Set aside a Saturday that you can devote to the task. We, however, recommend less drastic measures. Forget risky reinstallation and see the difference a cleaner Mac can make.
Clean up your Mac with a cleaner app — the easy way.
Broken preference files, login items and even unneeded language files can accumulate on your computer’s drive. Most of these you won’t even see, so looking through you Mac’s folders won’t necessarily yield the junk you’re after. Fortunately, CleanMyMac X has five modules dedicated to the areas of your Mac that often accumulate bulky files:
General system junk - There’s so much potential for bulky, hidden files here, including language files, OS X localizations, cache files and logs.
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Mail attachments - When you open or view a new attachment in Mail, the application stores a copy on your disk and keeps it until you delete the associated email. After a while, the total volume of copied files may reach a couple of gigabytes or more. Clean the local copy while keeping the original on your email server intact.
iTunes junk - Outdated iOS backups and iOS updates can take up huge amounts of space. Since they're out of sight, they’re out of mind. CleanMyMac locates and deletes these files safely and easily.
Photo junk - RAW originals can be replaced with high-quality JPEG alternatives, while Photos’ “Faces” caches and other photos caches are cleaned up.
Last but not least is the Trash bin. It’s so easy to forget about items in thrash. I’ve certainly done it, only to later discover I’ve got a GB or more just sitting in there! Download CleanMyMac for free and try it for yourself to see how easily it accomplishes all of this and more, including regular maintenance.
Bonus: regular maintenance to keep your Mac like new
The other key to a Mac that’s happy and healthy is regular maintenance. CleanMyMac’s Maintenance module provides access to all sorts of optimization goodness. Quickly run essential scripts and procedures that will keep your Mac in great shape for a long time, and prevent lag under high workloads. To find them, simply launch CleanMyMac and click the Maintenance icon.
The first option you’ll find is Run Maintenance Scripts, which are basic system routines — written by Apple — that OS X runs on a daily, weekly, and monthly basis. They aim to keep your Mac in shape, and now you can run them whenever you like.
Repair disk permissions and verify the startup disk to maintain your file system to optimize performance. For example, if you notice misbehaving apps, repair disk permissions. Note, that manual way to repair disk permissions via Disk Utility has been disabled since El Capitan. But if you're running Mavericks or Yosemiti, it's still possible. Got to Utilities in your Mac’s Applications folder and launch Disk Utility. Next, click First Aid .
Additionally, rebuild launch services. Finder uses the Launch Services database to keep information about file types and applications assigned to open them by default.
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As you install, remove, or update applications, the database may become corrupted and cause some troubles with opening applications or with displaying correct contents of the Open With menu. Use the Rebuild Launch Service Database task to resolve these issues.
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Get that “fresh Mac feeling” yourself with CleanMyMac X. While it’s admittedly not as fun as unboxing a brand new Mac, it’s fast, effective and a lot less terrifying that wiping your drive clean, crossing your fingers and starting from scratch. Try it for free and see the difference a clean Mac can make. Grab it now and get cleaning.