Reinstall Mac Os El Capitan

  

  1. Factory Reset El Capitan Imac
  2. Reinstall Mac Os El Capitan From Usb
  3. Cannot Reinstall Mac Os El Capitan
  4. Reinstall Mac Os X El Capitan
  5. How To Reinstall Mac Os El Capitan

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.

OS X Recovery Disk Assistant lets you repair disks or reinstall OS X without the need for a physical disc. The tool allows you to create OS X Recovery on an external drive that has all of the same capabilities as the built-in OS X Recovery: reinstall Lion or Mountain Lion, repair the disk using Disk Utility, restore from a Time Machine backup, or browse the web with Safari.

And from Lion to 2012 means another Mac and Target Disk Mode or a Bootable Installer, and the Bootable Installers were hand-made and not documented by Apple (search the ‘net) prior to El Capitan. About macOS Recovery on Intel-based Mac computers - Apple Support. How to reinstall macOS - Apple Support. Step 4: Reinstall Mac OS X without Losing Data. When you get the macOS utility window on the screen, you can just click on the ' Reinstall macOS ' option to proceed. Afterward, you simply need to follow this basic drill to reinstall macOS on your system. A confirmation message will appear, informing you about the reinstallation details. Apple recommends the Command-Option-R option as the only safe way to reinstall a Mac with El Capitan or earlier versions of macOS if you want to be sure your Apple ID doesn’t persist even after. 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 Download Mac Os X For Reinstall Windows 7. In theory, you should have to install El Capitan only once, or never if your Mac came with El Capitan preinstalled.

If your Mac is missing a Recovery partition, then you may be able to restore it, by resetting your PRAM. To reset the PRAM, restart your Mac while holding down the ‘Command+Option+P+R’ keys until you hear macOS’ distinctive startup chimes for a second time.

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

Download Mac Os X For Reinstall Windows 7

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.

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:

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  1. Boot from your Recovery HD partition by restarting your Mac while holding down the Command+R keys.

    The OS X Utilities window appears.

  2. Select Reinstall OS X, and click Continue.

    The OS X El Capitan splash screen appears.

  3. Click Continue.

    A sheet informing you that your computer’s eligibility needs to be verified by Apple appears.

  4. 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.

  5. Read the license agreement and click Agree.

    A sheet drops down, asking whether you agree to the terms of the license agreement.

  6. 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.

  7. 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.

  8. Click the Install button.

    A sheet asks for your Apple ID and password.

  9. 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:

  1. 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.

  2. 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.

  3. 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.

  4. 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.

  5. 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.

  6. 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.

  7. Read the Terms and Conditions and click Agree.

    A sheet drops down to confirm your agreement.

  8. Click Agree again.

    The Create a Computer Account screen appears.

  9. 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.

  10. 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.

  11. 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.

  12. 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.

  13. Type the code in the verification field and then click Continue.

  14. 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.

A1398 is used for a range of MacBook Pro 15” retina models from 2012 to 2015. All models are capable of on El Capitan, High Sierra, and Mojave, and variously other macOS releases, and given sufficient memory and available storage on this specific MacBook Pro.

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How Reinstall Mac Os Without Disc

Rather than Yosemite, download El Capitan (or later) to and then create a bootable USB installer (with related instructions) on another Mac, and then transfer that USB installer to the target iMac.


Boot that USB installer on the target Mac, and use Disk Utility to wipe and partition as GPT and format the internal storage as HFS+, and then use that installer to install El Capitan, High Sierra, or Mojave on the target iMac.


Some addenda..


It’s fairly common for folks using a previously-owned Mac to have not gone through the ‘Welcome to Mac” installation and set-up sequence when first starting out with the Mac, and which can mean the Apple ID and the install and the software are not associated with your current Apple ID; they’re associated with the previous owner’s Apple ID. This causes various issues with access to older releases, and with access to software updates. The option here is to back up, wipe, reinstall, gomthrough the “welcome”, and migrate in your files and apps using Migration Assistant.


It’s also fairly common for folks doing macOS reinstalls on older hardware to be dealing with a nascent hardware problem. Failing hard disk drives can manifest with corruptions, beachballs, performance degradation, wedges and crashes. Among other symptoms.


Apple is making it more difficult to acquire and to stay on older releases.

Mar 5, 2019 8:13 AM

Warning: Please follow these instructions at your own risk. I am not responsible for any damage or information loss that could result from following this guide. Also, note that installing OS X on PC is illegal. Please buy a real Mac if you're satisfied with your Hackintosh. This guide is for evaluation purposes only.

Requirements

  • An Intel-based PC with UEFI bios
  • A USB flash drive with at least 16GB capacity
  • A dedicated hard drive (SSD highly recommended)
  • A computer running OS X (10.9 or later) for preparing the installation USB flash drive

I chose to avoid the UniBeast installer (by Tonymacx86) because of its commercialized nature, as described here. Here is a vanilla guide to installing El Capitan on your PC!

Preparing the USB Installation Drive

First things first. We need to prepare a USB thumb drive that will contain the installation files as well as the bootloader and custom kexts for our specific Hackintosh build.

Download El Capitan from the Mac App Store

Head over to your existing OS X environment running 10.9 or later and open the Mac App Store.

Search for 'El Capitan' and click Download. The download is completely free if you're running OS X 10.9+.

Wait for the download to finish (this could take some time).

Format the USB Drive

Open Disk Utility in Applications/Utilities and locate your USB device. Make sure you've backed up anything important on that drive as it will be erased forever.

Select it, and then on the right, click the partition tab.

  1. Click Curent Layout and change it to 1 Partition.
  2. Set the Name to USB.
  3. Set the Format to Mac OS Extended (Journaled).
  4. Click Options and select GUID Partition Table.

Click Apply to format the drive.

Copy the Installation Files to the USB Drive

Now that we've downloaded the installation files from the Mac App Store and formatted our USB drive, let's copy the installation files to it.

Run the following command in the Terminal (Applications/Utilities):

The command will run a script inside the Install OS X El Capitan application that will copy the installation files to the USB drive.

This process takes about 15 minutes. Go out for a quick run, or a hamburger, or both. When you come back, it should have finished.

Installing a Bootloader

If you tried to boot from the USB drive as is after the previous step on a PC, it wouldn't work. We need a bootloader that makes it possible to boot OS X on x86 and x86_64 PCs.

There are 3 popular bootloaders to choose from.

Reinstall Mac Os El Capitan
  • Clover
  • Chameleon
  • Chimera

I went with Clover as it seems to be the most popular choice among other El Capitan installers, mostly for the following reasons:

Clover is an open-source EFI-based bootloader created on Apr 4, 2011. It has a totally different approach from Chameleon and Chimera. It can emulate the EFI portion present on real Macs and boot the OS from there instead of using the regular legacy BIOS approach used by Chameleon and Chimera. For many, Clover is considered the next-gen bootloader and soon it will become the only choice since BIOS in being replaced by UEFI in every new motherboard. One big feature of Clover is that iMessage, iCloud, the Mac App Store works along with Find My Mac, Back To My Mac and FileVault since Clover can use the EFI partition. (Read more)

Install Clover on Your USB Drive

Installing Clover on your USB drive is relatively easy. It involves running an installation wizard and selecting some options.

Download the latest Clover installer from here.

  1. Run the installer.
  2. Click Continue twice.
  3. Click Change Install Location and set it to your formatted USB drive.
  4. Click Customize and check the following options:
    • [x] Install for UEFI booting only
    • [x] Install Clover in the ESP
    • [ ] Drivers64UEFI
      • [x] OsxAptioFixDrv-64 - fixes memory map created by AMI Aptio EFI. Booting OS X is impossible otherwise.

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  1. Click Install and wait for the installation to finish. It shouldn't take more than a minute.
Copy Essential Kexts to the USB Drive

Next, we'll need to copy some kexts (kernal extensions, similar to drivers on Windows) to the USB drive.

  • FakeSMC.kext - open source SMC device driver/emulator developed by netkas. Tricks OS X into thinking it's installed on Apple hardware. Absolutely required for Hackintosh installation.
  • NullCPUPowerManagement.kext - disables AppleIntelCPUPowerManagement.kext which may cause kernel panics when you try to boot from the USB drive. It's optional, copy it only if you get an AppleIntelCPUPowerManagement-related kernel panic.
  • ApplePS2Controller.kext and AppleACPIPS2Nub.kext - adds support for PS2 devices (such as PS2 keyboard/mouse). They're optional, copy them only if you still use PS2 devices.

Download these files from here and copy them to the EFI mounted volume at /EFI/Clover/kexts/10.11/.

Now that the installation USB drive is ready, let's install OS X El Capitan!

Boot from the USB Drive

Restart your computer and boot from the USB drive (Press Esc/F8/Del to access the boot selection menu).

Use the arrow keys to select Boot OS X Install from Install OS X El Capitan (It should be selected by default). Press the spacebar and select Boot Mac OS X in verbose mode. Verbose mode means that you'll be able to see exactly what's going on under the hood as OS X attempts to boot up its installer. You'll be able to see the exact error message if booting fails.

Press Enter and cross your fingers. Clover will now boot the installer from your USB drive. This could take some time, in my case, it takes around 5 minutes (Don't worry -- the startup time is around 5 seconds after installing on an SSD).

Did it fail?

It's more than likely that the boot will fail. Don't panic (ha-ha), as kernel panics usually mean that you forgot to copy an essential kext to the EFI partition. Look up the exact error you're getting before the boot log comes to an end and search Google for a solution.

Once you find an additional kext that your system needs, you'd attempt to copy it to the EFI volume, only to discover that it's gone! Not to worry, it's just unmounted and hidden. Follow this guide to mount the hidden partition, and then, follow the Copy Essential Kexts section above to copy it to the USB drive's EFI partition.

Format the Target Hard Drive

Once the installation wizard boots, the next step is to prepare the hard drive that you want to install OS X on.

Click Continue, followed by Disk Utility.

Select the target drive to install to (not the USB drive!) and click the Erase button. Make sure to back up anything important on that drive, as it will be deleted forever.

  1. Set the Name to El Capitan.
  2. Set the Format to OS X Extended (Journaled).
  3. Set the Scheme to GUID Partition Map.

Click Erase to format the drive.

Install OS X to the Target Drive

Exit the Disk Utility and click Install OS X.

Click Show All Disks and select the drive you just formatted to install OS X on it. Finally, click Install.

The process takes about 25 minutes. Be patient. For me, it hung at the end ('1 second remaining') for around 5 minutes. Don't be tempted to reset or cancel the installation.

When that's done, the system will reboot. Make sure to boot from the USB device again, and select Boot OS X Install from Install OS X El Capitan once again, in verbose mode. The installation is a two-part process that continues once you re-boot into the USB drive.

Finally, after about 25 more minutes, OS X El Capitan should be successfully installed on the target drive.

Boot into El Capitan via the USB Device

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After the second reboot, boot from the USB device once again, but this time, select Boot OS X from El Capitan, and select verbose mode.

El capitan won

Press Enter and cross your fingers again. If all goes well, you'll be presented with the setup wizard:

Take a minute to set up your new Hackintosh. Once you're done, there are a few things you need to do to finish off the installation.

Reinstall Mac Os El Capitan From Usb

Reinstall Clover on the Hackintosh Drive

In the previous step, we used Clover on our USB drive to boot our Hackintosh. This is fine, but most of us aren't going to keep that USB drive plugged in forever. Let's make it possible to boot El Capitan independently by reinstalling Clover on it.

Go back up to the Install Clover on Your USB Drive section and follow the steps again, but this time, select your El Capitan volume instead of the USB drive.

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Once again, copy the essential kexts to the EFI partition that shows up after installing Clover.

Finally, make sure to add Clover EFI boot options which is possible by pressing Clover Boot Options in the Clover boot window (if there are 2 boot options -- find the one for your SATA drive). I literally spent 3 hours figuring out why Clover would not boot when I disconnected the USB drive before I figured out that I need to manually add the EFI boot options.

Now you'll be able to boot directly from the El Capitan hard drive, as it should be!

Audio and Networking

If you're lucky, audio and networking will work right out of the box. If not, you're on your own from here. You'll need to research your exact hardware (by using System Information in Applications/Utilities) and searching Google to find the right kext or installer to make it work on El Capitan.

Clover Themes

The default Clover theme is pretty ugly (no offense). Check out this theme database to improve Clover's appearance.

This is YosemiteLogin by xenatt:

Reinstall Mac Os X El Capitan

Enjoy!

How To Reinstall Mac Os El Capitan

That's it! Enjoy your new Hackintosh, and if you absolutely love it, consider buying a Mac!