Installing iOS on imac. Reinstalling Mac OS X and Apple programs


And its update. Before you begin, it is important to decide what exactly you need to do. That is, it will be necessary to understand whether a complete reinstallation is required operating system or a simple update. You will also need to prepare the device for reinstallation (for example, if you are going to sell your device).

In addition, you can restore from a backup copies of Time Machine if you set this up. So, first things first:

  1. If you want to update your Mac OS, you can create a backup copy so that in case of unforeseen circumstances, you can restore the system.
  2. If you are going to restore the operating system, then no action is required. However, you can check for backups if you want to install one of them.
  3. At complete reinstallation you will need, as in the first point, to create a copy. Then be sure to deauthorize your computer or laptop from iTunes. To do this, launch the program, open the “Account” tab, select the authorization item, and then open the deauthorization item. Please note that your Apple ID password may be required. Next, exit iCloud service, after disabling Find My Mac if it was previously enabled. Also log out of your iMessage and FaceTime account. At this point, your preparation ends. Let's move on, friends.

Reinstallation

  • First of all, please note that next instruction involves reinstallation with installation of the version of the operating system that was installed when purchasing the device. That is, if you purchased a Macbook with OSX Mavericks, and then upgraded it to ElCaptain, then after reinstallation the laptop will have Mavericks again. It is also worth remembering that all your data will be deleted from your computer. This method is suitable for those who want to sell their device, give it to someone, or simply receive the device “out of the box.” If this method does not suit you, then go to the “Recovery” paragraph.
  • So, let's get started: immediately after turning on the computer, hold down the key combination Option+Command+R.

  • Once you see the logo Apple, you can release the buttons.
  • If you did everything correctly, it will start “ Disk Utility", with which you will need to clear the built-in hard drive. Please note that Extended journal format must be used. After this you can close the window.
  • Now click on “Reinstall mac OS”. Follow the prompts on your computer or laptop screen to complete the steps indicated.
  • When your device restarts, you'll see the Setup Assistant that opens when you turn on macOS computers for the first time. If you don't want to configure it (for example, as mentioned above, when selling the device), then use the Command+Q combination to turn off the Mac. This way, you will give the opportunity to configure the settings to another user, your future buyer. Ready! This completes the reinstallation.

Update

Updating macOS is much easier than any other operating system on your computer. This process is accompanied by fewer problems and questions. This will be especially noticeable by those people who have updated Windows at least once. In order to update your Mac computer or laptop, you only need an Internet connection and a little time.

  • Launch an app store Mac App Store.
  • In shopping or in other sections of the store, find the new version of the operating system. Most often it is in the first places of the “Top Chart” or in the “Selection”.
  • Click the “Download” button or “Install” if the system has already been downloaded previously. Wait for the operation to complete and continue using the now updated mac OS.

Recovery

Recovery using Time Machine

If you have a Time Machine backup, you will need to boot the device from the recovery partition using Command+R when you turn on the computer. In the service window mac programs OS, select the item of the same name. Please note that all data from the disk will be cleared and replaced with the information and files from your backup. The recovery itself is easy to do using the instructions on the computer screen.

Sooner or later the day comes when you need to reinstall the Mac OS operating system on your MacBook PC. This task is no more difficult than reinstalling Windows. This is what we will talk about.

operating system on MacBook

Reasons for reinstalling the operating room MacOS systems on a Mac computer they are:

  • Damage or wear of the built-in storage device (HDD);
  • selling or donating a MacBook to another person;
  • "moving" to another MacBook (more new model, but with preservation previous version MacOS systems);
  • data transfer to Apple gadgets or to another computer.

What happens when reinstalling MacOS:

  • “from scratch”, including formatting the built-in disk;
  • reinstallation “on top”, preserving personal data and applications (macOS update).

For example, using the MacAppStore you can update the version of OS X Lion and OS X Mountain Lion to the newer OS X Mavericks.

Procedure for sale or transfer Mac computer another user next. It deserves special mention.

  1. Backup personal data from a MacBook to a separate media or cloud service.
  2. Disabling special services and functionality that manage data copying and transfer.
  3. Erase all personal information from disk.

Attention! Before you start reinstalling MacOS on your MacBook PC, take the trouble to save all your data on an external drive! This will be discussed first.

Backing Up Data Using Time Machine

Time Machine is designed for Reserve copy personal files from a MacBook and restoring them back to it. But it requires external USB drives (HDD, SDD drives) formatted in MacOS Extended or Xsan - file systems FAT/NTFS designed for Windows and Android are not supported. If the disk was previously formatted in FAT/NTFS formats, the MacBook will not accept it if you refuse to reformat it “for yourself.”

The Time Machine application is launched from the system MacOS settings V apple menu. When you connect an external hard drive, a corresponding notification will appear.

Do you really want to destroy all data recorded on this drive in a different format?

If external drive has already been formatted, the Time Machine application will give the go-ahead for its use. Confirm your request.

Do you really want to copy your data to this drive?

If Time Machine does not show disk selection, do the following.


Interestingly, backups in the Time Machine program are fully automated - the backup copy is “refreshed” hourly, and their storage is organized, so you won’t get lost in them. In addition, copying is also possible to an Apple server (like iCloud) and in storage local network, supporting Apple File Protocol. All this often helps if necessary MacOS installations do not waste precious working time.

After copying all your data, you can start reinstalling MacOS.

Reinstalling MacOS on Mac

There are several ways to reinstall the MacOS operating system on a MacBook: a “clean” installation from a flash drive, installation “over” a previous version (updating from MacAppStore) and restoring MacOS from a backup.

How to reinstall Mac OS from an installation flash drive

The preliminary steps are as follows.

  1. Download installation image operating system Mac OS X from Mac store App Store or from third party sites.
  2. When downloading is complete, click right click mouse over the downloaded file and select “Show package contents”.
  3. Go to the /Contents/SharedSupport/ folder, copy the InstallESD.dmg file to safe place on the disk and mount it on your MacOS desktop.

We will need the Disk Utility application included with MacOS. The next steps are as follows.


Disk Utility will create an installation flash drive in automatic mode, and she performs this operation quite reliably. When copying is complete, Disk Utility will notify you.

Congratulations! Installation flash drive MacOS is created! You can restart your MacBook. Preparing to install MacOS is as follows.


All! MacOS installation has started. The MacOS operating system will install automatically - this will take 30-100 minutes, depending on the performance of your MacBook. After it, your PC will be immediately ready for use.

How to install the system without formatting the internal drive

Installing MacOS without erasing the disk means downloading and installing MacOS updates directly from the MacAppStore. An installation flash drive is not needed here. This reminds iOS update on smartphones and tablets over the air. This method is good for those who once bought a MacBook - and are not going to change it, but, on the contrary, will work on it for many years, because MacBook computers, like Apple iDevice gadgets, are of very high quality, reliable and convenient.

Before updating, check if your MacBook meets the hardware requirements new version MacOS - otherwise it will slow down.

Not every previous version of MacOS can be updated to the desired version. So, if your MacBook is running macOS Snow Leopard (10.6.8) and your MacBook will run macOS Sierra, first upgrade to macOS X El Capitan.

The version of MacOS Sierra is taken as an example. Other copies are searched for and “installed” in exactly the same way. Your actions are as follows.


If you have OS X El Capitan 10.11.5 (or more recent), the macOS Sierra version downloads silently. You will then be prompted to install this version.

Click on the install button

During the installation of MacOS, the PC restarts several times. If this version did not suit you (fell MacBook performance) - “roll back” to the previous one (for example, OS X El Capitan), with which the PC performance was very satisfactory.

Restoring MacOS from a backup

For example, we take a “rollback” from MacOS Sierra (10.12) back to OS X El Capitan (10.11) or OS X Yosemite (10.10). Let's say there are backups made in the Time Machine application before installing MacOS Sierra.

Important! You can only restore a MacOS system from a backup to the same MacBook. Trying to transfer your copy of the MacOS system with data to another PC in this way is useless. Use other methods.

  1. Connect an external drive to your MacBook and save existing files in Time Machine, naming the new copy MacOS Sierra.
  2. Open your previous copy of OS X Yosemite with Time Machine on a different drive after connecting it to your MacBook.
  3. Restart your MacBook while holding Command+R on your keyboard. The familiar MacOS recovery menu will open.
  4. From the OS X Utilities menu, select Restore from Time Machine Backup.
  5. Once in the “Recover from Time Machine” recovery window, click on “Continue”, and then specify the source - the disk with the OS X El Capitan “backup”.
  6. The saved copy should be like this: in the case of OS X El Captain version MacOS must be 10.11.x. Click the Continue button. Specify installation disk to restore from a copy, click on “Restore”.

Ready! The OS X El Capitan version will be reinstalled.

Transferring a copy of the operating system and your data to another MacBook

Go to Programs/Utilities and open Migration Assistant. The structure of your files and folders will be preserved.

Click to continue

When running, the application requires closing all other running programs.

If both computers are working, but you still want to duplicate your version of MacOS and all data on the second computer, connect the computers to each other using network cable LAN, by wireless network Wi-Fi. Connecting directly using a Thunderbolt or FireWire cable will require running your previous Mac in backup mode, which will make the Assistant experience a little more complicated. However, both methods work clearly. You can connect an external disk with a backup copy to the new PC instead of the previous PC - in this case, the operation of the Assistant on the new PC will not change significantly.

So, the procedure is as follows. Taken as an example normal mode operation of the previous PC with Assistant.


All! The copy session has started. This can take anywhere from 30 minutes to two hours, depending on the amount of data and the performance of both Macs.

Problems encountered when reinstalling MacOS

Problems when updating or “rolling back” may be as follows.

  1. No recent backups. You once disabled backup yourself. Copy your files now to avoid losing them by starting the process manually. Enable backup.
  2. An error occurred during the next backup or when restoring personal data from a previous copy. The external drive that you have been recording to so far is not suitable for further use. Contact an Apple service center or certified computer repair shop to restore your data. This procedure is not free.
  3. Error during the next MacOS update. Your Mac PC may no longer be supported. This happens once every few years. All you have to do is use current version MacOS before replacing your Apple PC.
  4. The computer began to work noticeably slower than before the update. Minimum system requirements next new version equal or exceeded specifications your PC. “Roll back” to any of previous versions MacOS. Typically, Apple tries to prevent this from happening - it simply stops supporting older computers, just as it is no longer possible to install iOS 10.x on iPhone 4x devices.
  5. After several active years, your PC suddenly began to freeze despite the fact that you did not update MacOS. Maybe it's time to replace the internal HDD/SSD drive? Try to backup your important data before replacing internal disk- while something is still being read from it.
  6. It is impossible to “roll back” to one of the previously installed versions of MacOS. The “rollback” must be done gradually. If there are no previous backups, download a new “image” and “rollback” first to this version, and then repeat the “rollback” to an even higher one earlier version MacOS.

Video on the topic

Reinstalling Mac OS - “on top” or “from scratch” - is not difficult. It is only important to secure your data. This real way extend the life of your beloved MacBook for another number of years. You will succeed!

To fix bugs and improve your computer's performance, you need to periodically reinstall OS X. The reinstallation process only takes a few minutes and is a fairly simple process. If you have a backup of all important files, then there should be no problems during installation. See Step 1 to learn how to reinstall OS X 10.5 (Leopard) and 10.4 (Tiger).

Steps

Part 1

Preparing for installation

    Back up your data. Reinstalling OS X will delete all data on your computer. Therefore, you need to copy all important documents, photos, videos and other files to at least one third-party storage media.

    • You can burn backup files to DVD, copy them to external hard disk or even upload them to an online data storage.
    • Make sure you back up everything necessary files. After installation, you will not be able to recover files deleted during the installation process.
    • During the installation process you can export all your custom settings and files, but for best performance It is recommended to install the system from scratch.

  1. Start the installation process from your work computer. If your computer can boot OS X, you can start the installation process from within the operating system itself. Paste the installation DVD disc into your computer and wait until the icon appears on your desktop. Double-click the "Install Mac OS X" icon and then click Restart.

    Start the installation process from a non-working computer. If your computer won't boot into OS X, you can start the installation process by booting from the DVD. Restart your computer while holding down the key Option. The Download Manager will start, which will list all possible sources downloads.

    • Once the Boot Manager starts, insert the OS X installation DVD. After a while, the DVD will appear in the list of download sources. Select it to restart your computer and boot from the DVD.

  2. Select your installation type. Click on the button Options... in the "Select installation path" window. When installing OS X, you have two options: Backup and Install and Uninstall and Install. Select the appropriate process type and click on the button OK.

    • "Backup and Install" creates a copy system files and then performs the installation. If you choose this type, you can also save user data and network settings. This option is not recommended if you are experiencing problems with your current installed version OS X. With this installation method, you will have to manually reinstall all existing programs, otherwise they may not work properly.
    • Uninstall and Install removes the entire contents of the disk and installs OS X from scratch. This deletes all data, so make sure you back up all important data. This is the preferred option as it solves the majority possible problems and improves system performance.

  3. Select the installation path. If your computer has several hard drives or disk partitions, you can choose where to install OS X. The number of free space on the disk and the amount of space required to install OS X. Select the hard drive where you want to install OS X and click on Continue.

    • Use the "Format Disk As" drop-down menu to select the "Mac OS X Extended (Journaled)" formatting option.
    • Make sure you are not attempting to install to a Recovery disk or Storage disk.

  4. Select the software you want to install. The installer will show a list of all additional packages programs that will be installed with OS X. If you don't have a lot of hard drive space, you can discard the least important files by clicking Customize....

    • Expand the "Printer Drivers" section and uncheck any drivers you don't need.
    • Expand the "Translation from other languages" section and uncheck those languages ​​that you will not use.

  5. Start the installation process. Once you have chosen additional programs, you can begin the operating system installation process. To start installation, click on the button Install.

    • The installation status indicator will allow you to determine how much time remains until the installation is completed. The installation process is completely automatic. Once the installation is complete, your computer will restart.

Part 3

Setting up OS X

  1. Customize your keyboard. The first thing you will be asked to do after restarting your computer is to configure the keyboard. Follow the onscreen instructions to discover and set up your keyboard.

    Install home region and keyboard layout. After that. Once the keyboard is detected, you will be prompted to select a region and keyboard layout. If you often take your computer on trips, set the region to your home region.

    Decide if you want to transfer any data. Since you are installing from scratch, you have no data to import. Later, you can copy the previously saved backup files. Select "Don't share any information now" and click Continue.

    Enter your Apple ID. If you have an Apple ID, you can use it to sign in. This way you can sync your settings with your other Apple devices. You can read about how to create an Apple ID in the corresponding article. Entering your Apple ID is optional.

    • You can also choose whether you want to register your software with Apple. This may help you obtain official support.

  2. Create an administrator account. The administrator account is Account with rights to change system settings and software installation. If this is your computer, enter your name in the "Name" field and a nickname in the " Short name". Often, users enter their name with a small letter in the "Short name" field.

    • The short name is used to create a home directory label.
    • It will be very difficult to change the Short Name later, so make sure you are happy with it.
    • The administrator account requires a password. If you want, you can add a password hint.

  3. Start using OS X. Once the Installation Assistant has completed its work, you can begin using the newly installed operating system. You will need to reinstall programs that you previously used and copy previously saved backup copies of files to user directories.

  4. Install all available updates. After installing OS X is complete, you should install any available updates as soon as possible. This will help secure the system and increase performance. You will need to download updates from Apple, so your computer must have an Internet connection.

    • To download Latest updates, go to the Apple menu and select "Software Update...". The program will check for availability available updates and will show you a list of them. Select all the updates you want to install and click the button Install. Updates will be downloaded from Apple servers and installed. Once the installation is complete, you will need to restart your computer.
    • Repeat the process. Some updates are only available when previous ones are installed. Repeat the process of checking for and installing updates until the list of available updates is empty.
  • After reinstalling the operating system, always install all official Apple Software Updates.

Warnings

  • Before any system reinstallation, always make a backup copy of your files. Even when doing Archiving and Installation errors during the installation process may result in data loss.
  • By doing Archiving and Installation use installation CD with the same version of the operating system that is installed on your computer. For example: if your computer originally had Mac OS X 10.4 (Tiger), but you upgraded it to Mac OS X 10.5 (Leopard), then do Archiving and installation using the Leopard CD.

With its own pre-installed operating system Mac system OS. Like all the company's products, it claims to be of exclusive quality, use advanced technologies. On this moment The following varieties are available for sale:

Find out how to update your Mac's OS in the article below.

MacBook Pro is available in 13-inch and 15-inch sizes and in different specifications. All Mac models are equipped with Intel processors, battery life without recharging is up to 10 or up to 12 hours.

The newest operating system currently used on Mac computers is Mac OS Sierra. Older versions of the OS can be updated for free via the Internet. The company's main advantage of the system is that it was created specifically for Mac equipment. Unlike Windows, which is installed on the most computers different manufacturers. By the way, now MacBook Pro and other models support the ability to install Windows.

MacBook Pro and others are already on sale with installed system. However, in some cases, you may need to install or reinstall Mac OS on your MacBook. It is necessary to distinguish between the terms:

  • The installation is otherwise called a “clean” installation, which is performed on a blank (formatted) hard drive or on a new one.
  • Reinstallation is when new system installed on top of the old one without full formatting and saving user data.

The need to install and reinstall the Mac OS arises when there are serious problems with its operation or an unsuccessful update. Like Windows, it still leaves behind garbage, which over time leads to slowdowns, freezes and other troubles. We will consider these processes using the example of the latest operating system, namely Mac OS Sierra. For previous versions, for example Mac OS X, there will be essentially no differences, but it is still recommended to upgrade to latest version, if your device supports it.

Operating system installation

Clean installation may be required if you decide to sell your laptop and need to permanently delete all data and Apple ID from it, or if there is a serious system problem. The installation algorithm on a MakBook Pro looks like this:

  1. Data backup.
  2. Creating a bootable USB flash drive.
  3. System installation.

To back up your data, use external storage and the Time Machine program, which automatically starts when connected removable media. The utility will ask whether to use an external drive for backup, click “Use.” as a backup drive."

After the backup is complete, you need to do bootable USB flash drive using disk utility:


MacBook Pro will find it itself the desired image on the flash drive and will begin installing the Mac operating system. You just need to follow the instructions on the screen.

Reinstalling the operating system

You can reinstall the system from the OS recovery menu on Mac OS, which is called up by a key combination during boot:

  • Command+R - reinstalls the latest version of the OS installed on the Mac, without updating to the latest.
  • Option+Command+R - update to the latest compatible Mac OS.
  • Shift+Option+Command+R - if the OS is already installed on the Mac macOS Sierra 10.12.4 or more modern version, then pressing the combination will allow you to reinstall the OS that came with your Mac laptop.

After pressing these key combinations, a menu will appear in which you need to select “Reinstall Mac OS”. Next, do the following:

  1. When the name Mac OS Sierra is displayed, click Next.
  2. Select the drive on which you will install the system (usually called Macintosh HD).
  3. The system reinstallation will begin, after which the Mac laptop will boot as usual.

All data, including passwords and Apple IDs, will be saved, as well as user data. But still create a backup copy before reinstalling, just in case. Reinstallation is also sometimes called recovery, as it often helps solve performance and performance problems. If the problems have not been corrected, then you can already try installing the system with formatting boot disk on your MacBook, not forgetting to copy all the data to external media, because after such a procedure they will all be deleted.

Majority Mac users are updated to the new generation of the operating system by simply pressing the " Update" in the Mac App Store, although a clean install of OS X is considered to be the most in a reliable way. In this material we will tell you how to do this.

In contact with

How to do a clean install of OS X El Capitan on a Mac by first formatting the disk?

1 . Restart your Mac and hold down the keys while turning on the computer ⌘ Cmd And R.

2 . In the loaded application, select the menu item " Disk Utility" and click the " Continue».

3 . From the left side menu, select system disk(by default it is called " Macintosh HD") and in the main window go to the " Erase" and format it by specifying the format " Mac OS Extended (Journaled)».

Attention! All data will be deleted from the Mac.

4 . After finishing the formatting process, close " Disk Utility».

5 . Select an item Install OS X in the window " OS X Utilities", if you need to download a copy of OS X El Capitan from the Internet and click the " Continue».

6 . If you plan to use bootable USB flash drive(by creation), then close the window " OS X Utilities».

7. In the window that appears, click Boot disk...

8 . In the window that appears, select a bootable USB flash drive with OS X El Capitan that was previously connected to your computer and click Reboot.

The computer will reboot and offer installation of the system from the USB flash drive.

It is worth noting that you can also press a button ⌥Option (Alt) on the keyboard when you turn on the computer. A list of available drives will appear from which you must select a bootable USB flash drive.


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