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.
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).
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
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:
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:
And that’s all there is to it. You’re done.
Summary: This post will show you solutions to fix the Mac not recognizing internal hard drive issue. Also, you can learn how to recover lost data from unrecoginzable Mac internal hard drive with data recovery software for Mac - iBoysoft Data Recovery for Mac.
Usually, the internal hard drive is the statup/boot drive for a Mac. It not only loads the operating system but also is responsible for storing data. Therefore, it is frustrating if your Mac doesn't recognize the internal hard drive and you can't access the data on this drive. What's worse, when you want to recover lost data, you find that you don't have any data backup. Luckily, according to your situation, this article will provide 4 feasible solutions for you to fix Mac not recognizing the internal hard drive.
Scenario 1: The internal hard drive can be recognized by Disk Utility
If your Mac doesn't recognize the internal hard drive, you can check if Disk Utility under Recovery Mode is able to recognize it. This really matters because if you can see the drive but the internal hard drive is not mounted in Disk Utility, your internal hard drive has no hardware problem and you can try the following solutions to fix your issue.
Solution 1: Repair with First Aid in Disk Utility
The issue that Mac doesn't recognize the internal hard drive could be fixed with First Aid under Recovery Mode. macOS Recovery is part of the built-in recovery system of your Mac, from which you can start up and use its utilities to repair certain logical errors of the internal hard drive.
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Step 1: Restart your Mac and immediately press and hold Command + R keys to get into macOS Recovery mode, then release the keys when you see the Apple logo.
Step 2: Select Disk Utility in macOS/Mac OS X Utilities and click 'Continue'.
Step 3: Select the internal hard drive and run First Aid to check and repair errors in this drive.
Solution 2: Try to boot in Safe Mode
Booting in Safe Mode will check the errors in the directory of your internal hard drive. To boot in Safe Mode, you need to restart the Mac and hold 'Shift' immediately, and release it until you see the login window. When you see a 'Safe Boot' message on the startup window, you can restart the Mac and try to recover data from this internal hard drive.
Solution 3: Recover lost data and erase the unrecognizable internal hard drive
If the internal hard drive is not recognized by your Mac still, then the file system of this internal hard drive could have corrupted. Is there any other way that you can access the data on this unrecognizable internal hard disk? Of course. You can recover lost data from this unrecognizable internal hard disk with Mac data recovery software like iBoysoft Data Recovery for Mac. Then, you can reformat this internal hard drive so that you can use this drive again.
iBoysoft Data Recovery for Mac is professional Mac data recovery software. It can not only recover lost data from a Mac that is unbootable, but also recover documents, photos, emails, music, etc. Mac os x sierra format usb drive ntfs. from formatted/unmountable/inaccessible external drives. This software supports recovering data from encrypted APFS, APFS, HFS+, exFAT, FAT32 drives on macOS Catalina/Mojave/High Sierra/Sierra and OS X 10.11/10.10/10.9/10.8/10.7.
Method 1: If you have only one Mac computer
If you have only one Mac computer, please directly run iBoysoft Data Recovery for Mac in macOS Recovery mode and recover lost data from the unbootable Mac computer. This method is greatly recommended because it is easier and more effective.
Headphone equalizer app mac. Method 2: If you have two Mac computers
Step 1: Download iBoysoft Data Recovery for Mac on another Mac, install and launch it.
Step 2: Click iBoysoft Data Recovery at the upper left corner of Mac menu bar and select 'Create Boot Drive'.
Step 3: Insert a USB drive into the healthy Mac computer.
Step 4: Follow the wizard to create a bootable recovery USB drive.
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Step 5: After you have completed creating boot drive, insert this bootable USB drive into the failed Mac and press the Power button and Option key (⌥) to start the MacBook up.
Step 6: Select iBoysoft Data Recovery for Mac from the boot options.
Note: If you're running macOS Mojave or earlier, iBoysoft Data Recovery for Mac will launch immediately when your Mac boots up. But, if your Mac is running macOS Catalina, you need two additional steps to launch this program.
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span>Step 7: Wait for your Mac to boot up, open 'Terminal' application from 'Utilities' drop-down menu.
Step 8: Run the following command:
Reinstall Mac Os X From Usb
Step 9:Follow the wizard to recover lost data from the internal hard drive.
Step 10: Restart the Mac, press and hold Command + R keys immediately to get into macOS Recovery mode.
Step 11: Select Disk Utility in the Utilities and click 'Continue'.
Step 12: Select the internal hard drive and click 'Erase' to reformat this drive.
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Step 13: Return to macOS/Mac OS X Utilities in macOS Recovery mode and select 'Reinstall macOS'.
Reinstall Os X No Hard Drive
After reinstalling the operating system, this internal hard drive could be showing up again.
Scenario 2: The internal hard drive cannot be recognized by Disk UtilityReinstall Mac Os Not See Hard Drive Space In El Capitan
However, if your Mac can't recognize the internal hard drive, this internal hard drive might have some hardware problems. You can either send it to a local repair store, which could be costly, or say goodbye to this drive and buy a new one.
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February 2021
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