2. After making sure that everything you need has already been transferred to external storage, go to App Store And download the OS X Yosemite image.

This step will have to be completed in mandatory, because for a clean install your account must first be upgraded to OS X Yosemite. Only in this case will the Mac prompt you to reinstall OS X Yosemite (and not OS X Mavericks if you skipped an update from the App Store).

without updating through the App Store, you will be offered OS X Mavericks as a “clean system.”

So you first update the existing OS X Mavericks to OS X Yosemite through the App Store, and then perform a clean installation of the system.

After updating to OS X Yosemite via the App Store and successfully logging in, reboot.

3. As soon as a white screen appears before your eyes and the Mac makes the characteristic sound of the boot starting, press and hold the key combination Command+R. We wait patiently for the loading lane to pass.

4. We are greeted by a window OS X Utilities. Choose Disk Utility and press Continue.

5. Choose Primary disk on which the system was installed, give it a name and select Erase. After a few seconds you will see a completely blank disk.

6. Close disk utility and go to point Reinstall OS X(in the OS X Utilities menu). Select the newly formatted disk as the target disk for installation. The installation will begin immediately.

When reinstalling the system from scratch, keep in mind that you must know the password to account , used in Mac App Store. Otherwise, installation will not be possible.

7. Pay attention to the status WiFi connections (upper right corner) – Internet access is required, since the system will be loaded from Apple servers. Otherwise, you risk getting an error.

Depending on the load on the servers at a particular time, installation may take from 20-30 minutes to several hours. If you have the ability to connect using a power cord "twisted pair"– this can significantly speed up loading.

After the reboot, you will be greeted by the start screen of the new OS X Yosemite and asked to go through the usual “first login” steps.

Good luck installing and testing the new OS X Yosemite.

Most Mac users are upgrading to the next generation operating system by simply pressing the button " 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.

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 . In the left side menu select the system drive (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.

Although the MacBook is known for its stability, just like other operating systems, glitches can occur when using Mac OS. Before reinstalling the Mac OS system on a MacBook, you should determine whether the failure is critical - perhaps a backup will save you, which will not damage the operating system files and save personal data. If returning to the restore point did not help or a backup cannot be made, like any other operating system, Mac OS can be reinstalled.

What is needed for reinstallation

Without an Apple ID, it is impossible to work with MacOS devices

Reinstalling the OS on a MacBook is a simple process that every user can handle. personal computer. First of all, for this task you will need the following tools:

1. Directly the Mac itself, with active connection to the network.
2. Access the Internet through another device (including to use the reinstallation guide from this site).
3. Know information about the MacBook and the installed version of Mac OS.
4. In some cases, an installation flash drive is required.

You must know your Apple ID login and password

In addition to the usual OS reinstallation, you can perform a system restore, transfer a copy from another MacBook, or update software. All this is done only with an active Internet connection and stable network access.

How to reinstall Mac os sierra from scratch

The most in a simple way reinstallation is used for this purpose standard utility MacOS.

Using utilities you can work with any OS version

To launch it, you need to know certain combinations and use a special procedure. Before starting the reinstallation, you need to be ready to enter Apple data ID.

So, reinstallation using Macintosh utilities is done as follows:

1. When the MacBook starts booting, hold down two “Command” + “R” buttons - this will allow you to reinstall the version of the operating system that was installed from scratch.
2. If you hold down the three buttons “Command”, “R” + “Option” after turning on, the system will be reinstalled to the latest current version MacOS.
3. If necessary, reset the operating system to the version that was installed when buying a MacBook, you need to simultaneously hold down the following keys: “Shift”, “Command”, “R” + “Option”. This option is suitable when selling a MacBook.

After one of the three options has been selected, the keys are pressed when the computer starts at the moment it starts loading. After this, the “MacOS Utilities” window will appear, in which you need to select “Disk Utility”.

In Disk Utility, you need to select the disk and erase data from it

After all data from the disks is erased, the computer will restart itself and launch the “MacOS Utilities” program, in which you need to select “Reinstall MacOS” (Reinstall OS Sierra or OS X, the name is determined automatically). The operating system on the MacBook will be reinstalled in the version that the user requires, selecting by pressing one of three types of hot keys.

After clicking the reinstall button, you will need to confirm the action several times by clicking the “Next” button, read and accept the terms license agreement company, then enter the password and login for the Apple ID profile to which the MacBook is linked and wait for the operation to complete. After installation is complete, you need to make final settings.

How to install the system without formatting the internal drive

If you need to reinstall MacOS without deleting data, then everything is done as follows:

• Turn on the computer.
• Press the hot buttons: “Command” + “R” (or others, full list in the previous section of the article).
• In the window that opens, you need to select “Reinstall OS” or “Reinstall MacOS” (the name depends on the selected option).
• After agreeing to the license agreement, you need to choose which hard drive the software will be installed.
• Enter your Apple ID information.

After this, the computer will automatically download the firmware, reboot and reinstall the operating system, while all data on the internal disk will be saved.

How to reinstall Mac os from an installation flash drive

An installation flash drive can be created for any operating system

Installing an operating system on top previous version can be done not only using a standard utility, but also using a flash drive. To do this, you first need to download MacOS and create an installation flash drive using removable media.

This is done step by step:

1. Installation Mac image OS X can be downloaded from the company’s official store or other website on the Internet.
2. After downloading, you need to right-click on the downloaded file and select “Show package contents”.
3. After this, you need to go to the /Contents/SharedSupport/ partition on your hard drive and copy the InstallESD.dmg image from there and paste it into any folder on the media.
4. Mount the InstallESD.dmg file to your desktop.

After this you can start creating bootable flash drive, to do this you need to launch the macOS utility application – “Disk Utility” and perform the following steps:

First you need to insert removable media, which will be an “installation flash drive”

1. In the Disk Utility program, you need to launch the component with the name of the flash drive.
2. Next, the “Partition disk” tab opens.
3. The name assigned to the disk should be simple so that it can be easily found in the list of computer media.
4. Here you need to select the location of the sections - for example, “Current”.
5. In the “Options” tab, check “GUID Partition Scheme” and click “OK”.
6. Next, the “Restore” tab opens in which you need to make settings: the source should be an image, the destination should be removable media, then click “Restore”.
7. Disk Utility will automatically create the installation flash drive and notify you when this action is completed.

To start installation, you need to restart your PC

When the creation and copying of the image on the MacOS installation flash drive is completed, you can begin installing the operating system. To do this, you do not need to remove the installation flash drive, but only need to restart the computer:

1. After the reboot starts, you immediately need to press and hold the “Option” button.
2. The media selection window will appear.
3. Select the disk on which the OS will be installed and erase data from it (Erase).
4. Then click the “Reinstall macOS” button.

The operating system is installed from a bootable flash drive in half an hour to two hours. Once the installation is complete, you will need to do some final configuration.

Restoring MacOS from a backup

In order to restore the operating system on a MacBook from a backup, you need to launch the standard “Utilities macOS” utility program by holding down the “Command” and “R” buttons while booting the personal computer. After this operation, the “MacOS Utilities” window will appear; here you need to select “Restore MacOS from a backup”. Reinstalling a system such as Mac OS using this method is only possible if there is a previously saved backup copy in Time Machine.

Time Machine is the only way to store macOS backups

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

Thanks to Apple technologies, it is possible to transfer not only the operating system, but also all user data, using the Mac utility application - “Migration Assistant”. To use the application, you need a donor MacBook and another computer in the operating room. Macintosh system or Windows.

First, both computers need to be connected to each other, when Wi-Fi assistance or LAN cable, using standard local network. Before you start migrating the OS, you need to close all programs on both computers, after which you need to open the “Utilities and Programs” section and select the “Migration Assistant” utility application.

After the “Migration Assistant” is launched on the recipient PC, you need to select data import from three options that determine how the information will be transferred. The same item must be selected on another computer. After this, the utility will ask for a security code, which must match.

After all actions have been confirmed, you need to select which data will be transferred. If you need to make an exact copy of the operating system and data on another MacBook, then you should select all the items.

You can partially transfer data and settings to another MacBook

Typically, transferring data and applications from one computer to another takes no more than two hours, but if there is little data, then the entire operation can take only half an hour.

Final setup before use

After restoring, installing, or reinstalling, you will need to perform initial setup of the operating system. It will allow you to properly configure your personal computer and ensure ease of use. The initial functionality settings menu launches automatically; you need to specify the following data in it:

• Region of location.
• Keyboard type and language.
• Wi-Fi connection settings.
• A method for transferring data from an old computer.
• Verification data Apple account ID.
• Future account options.

Problems encountered when reinstalling MacOS

Any problem with macOS can be solved by restoring to a previous OS backup

Problems that arise when working with the X OS operating system or other versions of macOS may mean that components have become unusable or that some segments of the personal computer are damaged. Most often, users indicate the following errors:

• Time Machine does not have recent backups and cannot restore data - this is due to a disabled backup To be able to restore the operating system from storage, you need to enable automatic backup.
• If an error constantly occurs when trying to backup, reinstall, or install the operating system using Time Machine, this may indicate that the external media is damaged or unusable, in which case the only solution to the problem is to contact a service center Apple.
• macOS update error – this problem occurs if Apple no longer supports the MacBook and its update, in which case the only option is to be content installed version Macintosh.
• After updating or installing a new OS version, the computer began to work slower - this means that the minimum system requirements OS exceeded technical specifications computer.
• The personal computer began to freeze without updates and reinstallations - there was a need to replace the internal drive.

Other problems may occur when restoring, installing, or reinstalling the macOS operating system. All issues can be resolved by contacting an Apple service center, usually not free of charge.

Installing updates

To install latest updates from Apple for MacBook Pro or other models on the Macintosh operating system, you need to press and hold the keys “Option”, “Command”, “R” when you boot the computer. After this, the update is installed using utility utilities from macOS.

Video instructions

Installing the macOS operating system is as easy as reinstalling Windows. If the instructions in this article did not help, you can understand this situation using the video below.

If the article, photographs or video about reinstalling the OS on a MacBook did not help, then for help and advice you can contact help desk service center Apple company. Typically, employee assistance costs a certain amount, but there are exceptions. To avoid difficulties in restoring the system, the user is recommended to ensure that Time Machine backup is working.

Any operating system sooner or later needs a complete reinstallation. The reasons for this may be different: infection with virus programs, bugs, and so on. As a result of "pollution" unnecessary files, the device starts to work much slower due to processes. In some cases, it is easier to reinstall the system than to find the cause of the problem and fix it. Let's figure out how to reinstall Mac OS and what is required for this.

What is needed to reinstall?

Those users who are familiar only with operating computers Windows system, will not be able to reinstall the OS on a Mac without additional help. To reinstall Mac OS on a MacBook, you must prepare the following:

1. MacBook () which is connected to the network;
2. our step-by-step instructions.

Now let's move on directly to the process of installing a clean version of Mac OS. This instruction Suitable for those who have operating system version 10.7 or later installed. If you have an older version, then you should update it using standard means OS. You can check the software version using the following steps:

How to reinstall Mac OS Sierra from scratch?

To begin with, it’s worth noting that reinstalling a Mac involves completely deleting data from hard drive computer. Therefore, first copy all important information on third party media.

You can do this using the Time Machine backup program. Following the instructions of the Copy Wizard, you can easily create backup copy on external media. Time Machine can also create backups in automatic mode. Old copies will be deleted, and new ones will be saved on disk. This way you won't have to worry about the data being up to date.

Now you know how to reinstall mac os x on macbook pro or air, as well as on iMac. Next, you need to configure the system and complete the installation process.

Final setup before use

After the installation is complete, the program will prompt you to make basic settings:

1. On the first screen, select the Mac OS language. In the future, it can be changed within the software settings;
2. on the second screen you will be prompted to connect to Wi-Fi (optional). You can skip this step;
3. next step– transfer of information. Before you reinstall your MacBook Pro, Air or iMac, you can back up all your data;
4. authorization via Apple ID (optional);
5. acceptance of the license agreement;
6. creating a Mac OS account for your computer.

Ready! Now you can independently install Mac OS on a MacBook of any version or an all-in-one iMac. The whole process is as simple as possible: the user only needs a few keystrokes.

Quite often, Mac users are faced with the following problem - how to return the computer to factory settings, resetting all user information, and reinstall the operating system completely. Instructions for this process are presented below.

The Mac, like most other Apple devices, is intended for personal use. This means that usually computer owners fine-tune the system for themselves and another user will not be entirely comfortable working with it. If there is a need to completely get rid of existing data and settings, then you need to follow the simple steps described below.

Clean installation of macOS: preliminary steps

IMPORTANT: Before a clean installation (reinstallation, flashing, factory reset) of a Mac, be sure to check:

• Is the Mac tied specifically to yours and not to any other
• Do you remember the credentials (username and password) of your Apple ID. You can check, for example, by logging into this page (from your computer).

The fact is that if the function was activated on the Mac (located along the path: System Settings → iCloud → ), then after reinstalling the system (resetting to factory settings), the system will ask you to enter the Apple ID to which the device is linked.

ON TOPIC:

How to reset Macbook, iMac, Mac mini, Mac Pro to factory settings (how to reinstall macOS)

Boot Mac into Recovery Mode

1. Make sure you have an Internet connection (for later installation of macOS), as well as a power connection in the case of a MacBook.

Attention! Next steps will lead to complete removal ALL data on Mac - back it up in advance necessary information on external media;

2. Restart your computer (or turn it on if it was turned off) using the  menu → Reboot;

3. During the reboot process, press and hold the key combination that suits you best:

⌘Cmd + R– installing the version of macOS that was running on the computer before problems arose. Those. your Mac will install exactly the same version as before.

⌥Option (Alt) + ⌘Cmd + R– Update to the latest version of macOS that your Mac is compatible with. For example, if the Mac was running High Sierra, and the breakdown occurred after the final build of macOS Mojave was released, the system will download Mojave from the Internet and install it.

⇧Shift + ⌥Option (Alt) + ⌘Cmd + R– installation of the version of macOS that was originally installed on the computer (or the closest available version to it).

Note: requires macOS Sierra 10.12.4 or higher new version OS.

4 . Then the window “ macOS Utilities"(on versions below macOS High Sierra may be called "Utilities" macOS programs"). Here you need to select " Disk Utility" and click " Continue";

1 . Select in Disk Utility your drive in the menu on the left (usually a Macintosh HD, it's at the very top).

2 . Click on the inscription First aid.

3 . Click Launch. The application will check boot disk on “health status”, i.e. functionality and correct existing errors. This process may take some time.

4 . After checking is completed, click Ready.

Erasing the boot disk

1. In the application Disk Utility, select a verified boot disk, go to the section "Erase"(at the top of the screen);

2. On the menu "Format" select APFS (for computers with installed macOS Sierra and more old version OS select Mac OS Extended) and click " Erase";

3. Once the disk formatting process is complete, click " Finish" to exit Disk Utility.

Reinstalling the macOS operating system (factory reset)

Reinstall macOS using the appropriate item (screenshot below) and follow the instructions. Latest version macOS will be downloaded from the Internet and the macOS reinstallation process will begin. During this time, the computer may restart.

Note: If you're installing from scratch, you'll have to configure your Mac and program settings all over again.