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.
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If you’ve never had Yosemite on this Mac, the first thing to do is visit the Mac App Store, download Yosemite, and install it. Once you’ve done that, here’s how to install, reinstall, or upgrade Yosemite, step by step: Boot from your Recovery HD partition by restarting your Mac while holding down the Command+R keys. 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.
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).
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
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.
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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.
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 tcook@me.com) 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.
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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.
Jun 08, 2020 • Filed to: Solve Mac Problems • Proven solutions
It is quite easy and straightforward to reinstall macOS using in-built recovery mode. You don’t have to be a technical expert to do this task. That’s why a lot of Mac users use the recovery mode for reinstalling their OS. But, there is question always going in their user’s mind when it comes to reinstalling OS X and it is that “does OS X recovery delete everything?”
So, if you’re also one of those users having the same concern, then you have come to the right page. Here, you will get to learn everything about reinstalling Mac in recovery mode and what to do if you end up losing your important files after reinstalling macOS in recovery mode.
Part 1. Will Reinstalling OS X Delete My Files?
Many users when they use internet recovery mode to reinstall Mac OS, some questions might come to their mind, such as “if i reinstall OS X will it delete everything” or “does internet recovery mode erase data”. Well, you need to first understand what is mac internet recovery is to know about answers to questions that are going in your mind.
1. What Is Mac Internet Recovery
Internet recovery is quite a helpful feature included in all OS X and macOS. The main principle of internet recovery is to troubleshoot OS X and restore the Mac system to its default settings. Moreover, internet recovery enables you to reinstall the macOS version when your interval drive is damaged and corrupt. It is also helpful if you’ve replaced your internet drive with a higher and new storage device, but you completely forgot to make a bootable version of your Mac OS X on USB media.
In case of internet recovery, your system downloads that macOS version that came with your specific Mac from Apple servers. Thus, it means you aren’t downloading the most recent macOS version with internet recovery. However, it effectively tests the hardware components and memory for any problems. Well, internet recovery mode allows you to:
Will I Lose Software If I Reinstall Mac Os
- Scan and repair your connected drives using Disk utility
- Erase and reinstall macOS, which was factory-preloaded.
- Restore your Mac system from a Time Machine backup.
- Inspect your internet connectivity or connection.
2. What Is Reinstalling Mac OS
Well, reinstalling macOS in recovery mode can aid you in replacing the current problematic OS X with a clean version easily and quickly. Generally, you have to reinstall OS X for troubleshooting purposes. The answer to the question “does reinstall macOS erase everything” is that simple reinstalling OS X won’t delete your files either erase your drive or disk, making it perfect for troubleshooting.
You don’t have to erase your Mac unless you are giving or selling your Mac or having a problem that needs you to erase the data. Thus, reinstalling OS alone from Mac recovery mode doesn’t affect your data, files, user settings, apps, etc. It will only re-install the fresh copy of OS X on your Mac.
If you are wondering how long does it take to reinstall OS X? Then, the short answer is it all depends on the speed of your internet connection and system.
Part 2. Data Loss during Reinstalling Mac in Recovery Mode
There is no doubt that basic reinstall Mac OS doesn’t erase your data, but that doesn’t mean at all your data and files are always kept safe. That’s why we recommended that you should backup your data before you reinstall macOS using recovery mode. You never know when you have to go through a data loss situation. Keep in mind that there is no chance of losing your files if you have already created a backup somewhere else.
You might don’t know that there are many factors that can cause data loss after reinstalling macOS. Here, we are going to list some of the factors you must know before you reinstall:
- No backup: There are many Mac users who save their important data on the main hard drive without creating any backup of data. No doubt reinstalling macOS doesn’t cause data loss, but chances of losing data don’t go away completely. That’s why reinstalling without backup can make you face data loss.
- Inaccurate operation: When it comes to reinstalling macOS, the chances are that you may perform inaccurate operations during the process, which can make you lose your important files. Sometimes, you fail to understand instructions on how to reinstall Mac OS X and skip a few steps and you end up losing your files.
- System corruption: It might be the case that your Mac system gets corrupted or damaged. Thus, in such cases, the reinstalling process can erase your data on Mac first before it reinstalls the clean macOS version.
- System Incompatibility: In some cases, if you encounter with system compatibility issue while reinstalling macOS, then there are chances of losing your data on Mac.
- Other reasons: In the procedure of reinstalling OS X, there are many other factors, such as virus attack, sudden power failure on Mac, or Mac internet recovery error may lead to your data being lost.
Part 3: How to Recover Lost Files after Reinstalling Mac OS?
Well, does reinstalling OS X delete files on your Mac? As we mentioned earlier, there are chances of losing your important files when you reinstall or upgrade OS X. There is no doubt that it is quite frustrating to lose your crucial files. Luckily, there is a reliable way available you can try to get back your lost files.
1. The Best File Recovery Software for Mac
You can get rid of your frustration of losing important files with the help of RecoveritData Recovery software for Mac to recover lost files after reinstalling the OS, no matter whether it is latest or earlier macOS. When it comes to Mac OS X file recovery, among various options, we recommend that you should give a try to Recoverit data recovery software for Mac. With the help of this software, you can easily and effectively recover files you lost after reinstalling the Mac OS. It can help you to get back various types of files, such as photos, videos, documents, archives, etc.
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- Recover Word documents from all storage devices like Mac.
- Recover 1000+ types and formats of files in different situations.
- Scan and preview the files before you recover them from MacBook hard drive.
In a case like recovering data after reinstalling Mac OS X or macOS, Recoverit data recovery software is sure to get back your lost data.
2. How to Recover Files on Mac in 3 Steps
You can get the Mac desktop folder or any other content back using Recoverit by following these steps.
Step 1: Select the Recycle Bin Recovery mode
Once the software is installed successfully on your Mac, run it. Now, you will be moved to the main interface of the software. Here, you need to choose the source hard drive location from where you’ve lost your files.
Step 2: Scan the Location
Now, the software will start “All-around” scan on the chosen hard drive to look for the lost files. This process will take a few minutes.
Step 3: Preview and Recover
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Once the scan completes, the software will display all files you can recover. So, choose those files you want to get back and hit on the “Recover” button.
In this way, you can easily get your documents that were disappeared back on Mac. In case if the quick scan was not able to fulfill your requirements, then you can do a deep scan as well. To do this, click on the “All-around Recovery” and wait as Recoverit would extract data from your Mac’s storage. While the deep scan would take more time than the quick scan, the results would also be far better.
Part 4. How to Prevent Losing Data When Reinstalling Mac?
Are you looking for tips for reinstalling Mac OS X without losing data? If so, here we have mentioned some tips and tricks that can help you to avoid losing data when reinstalling Mac.
- The first and foremost tip is to back up your important files before you begin with the process of reinstalling macOS. It is the best way to prevent your data from being lost. You can back up your data using Time Machine backup or you can transfer your data to the external hard drive.
- When you are reinstalling macOS, follow the instructions carefully and if you accidentally omit one step, then you might lose your data.
- Before you reinstall the Mac OS X, make sure that you have enough space for the reinstallation process so that it won’t stop or pause due to insufficient space.
- Make sure that your Mac is half or fully charged before you go for reinstalling macOS. Also, ensure that your system is connected to a reliable and strong internet connection.
- Use Recoverit data recovery software for Mac if you end up losing your files. The software can help you to recover lost files after reinstalling Mac OS X.
Conclusion
We hope that you now got an answer to your question - “does installing OS X delete everything”. The guide has covered all ins and outs of reinstalling Mac in recovery mode. We recommended Recoverit file recovery for Mac to users who want to recover files they get lost after reinstalling Mac OS X.
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