Reinstalling Mac OS. How to quickly reinstall Mac OS. How to reinstall Mac OS on a MacBook

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

• MacBook;
• MacBook Air;
• MacBook Pro.

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, the 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 computers from a variety of manufacturers. By the way, now MacBook Pro and other models support the ability to install Windows.

MacBook Pro and others are sold with the system already installed. 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 a new system is installed over the old one without full formatting and preserving 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, such as Mac OS X, there will be essentially no differences, but it is still recommended to update to the latest version if your device supports it.

Operating system installation

A clean installation may be necessary if you decide to sell your laptop and need to permanently remove 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 an external drive and the Time Machine program, which automatically launches when you connect a removable drive. 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 make a bootable USB flash drive using disk utility:

The MacBook Pro itself will find the desired image on the flash drive and 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 macOS Sierra 10.12.4 or a newer version is already installed on your Mac, 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 a system with formatting the boot disk on your MacBook, not forgetting to copy all the data to an external drive, because after this procedure they will all be deleted.

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 copy 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

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 an external hard drive, or even upload them to online storage.
• Make sure to back up all 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 of your custom settings and files, but for best system performance, a fresh installation is recommended.

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. Insert the installation DVD into your computer and wait until the icon appears on the 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 launch, listing all possible download sources.

   • 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 of your 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 of 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 most possible problems and improves system performance.

3. Select the installation path. If your computer has multiple hard drives or disk partitions, you can choose where to install OS X. The amount of free disk space and the amount of space required to install OS X will be shown. Select the hard drive where you want to install OS X and click 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 the additional software packages 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 the button 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 selected 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

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.

   Set your 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. An administrator account is an account that has rights to change system settings and install software. If this is your computer, enter your name in the Name field and a nickname in the Short Name field. 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 the latest updates, go to the Apple menu and select "Software Update...". The program will check for available updates and 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.
• When executing Archiving and Installation Use an installation CD with the same version of the operating system 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.

Modern technology is constantly evolving. Is software developing at the same time as technology? under which it operates. But despite continuous improvement, does the software still crash at times? and it needs to be reinstalled. There are several ways to reinstall: recovery, or the so-called installation from scratch.

By following these instructions, you can always reinstall the system on a macbook air, and this process will not take much time and will not cause any difficulties.

Reinstalling macOS (OS X) can be done for completely different reasons (selling a computer, solving software or hardware problems). In any case, this is a fairly simple (especially for Windows-based computers) process that does not require creating a bootable USB flash drive.

There are three main types of macOS reinstallation - with complete data clearing (if you, for example, sell your Mac), without deleting personal data, and restoring from a backup.

Attention!

1. Both types of installation require an active Internet connection (the operating system is directly downloaded from Apple servers). If there is none, then you will need to create a bootable USB flash drive on another Mac or PC.
2. If data safety is important to you, do not forget to make a backup copy (if you have a second drive on your Mac or an external hard drive, use the Time Machine utility).

Reinstalling macOS (OS X) with full data formatting

Step 1 Start macOS in recovery mode by holding down the Command (⌘) + R or Option (⎇) + Command (⌘) + R keys when you turn on or restart your computer (if you cannot boot from the macOS recovery partition, then thanks to this keyboard shortcut you will launch macOS recovery over the Internet) until the Apple logo appears on the display

Step 2 Once the download is complete, the utilities window (macOS Utilities / OS X Utilities) will appear. Open Disk Utility and format the system hard drive

To do this:

• select the volume or disk in the left side menu and click on the Erase button
• Format select "Mac OS Extended (Journaled)"
• enter a new volume or disk name
• if you want to completely protect yourself and prevent further recovery of erased data by third parties, click “Security Options”, use the slider to specify the number of overwrite cycles over old data and click OK. Overwrite feature is not available for SSD drives
• click Erase and Done

Step 3 From the utilities window, select Reinstall macOS or Reinstall OS X

Step 4 After downloading and installing macOS, the computer will restart and the setup assistant will launch. If the computer is for sale, then press the keyboard shortcut Command (⌘) + Q and select Shut down so that the new user can customize the Mac to their requirements

Reinstalling macOS (OS X) while maintaining personal data

On a Mac, you can reinstall macOS to the current or older version of the operating system without deleting personal data. The entire process is almost identical to the previous chapter, except that you do not need to perform Step 2 (opt-out of Disk Utility and do not format the hard drive). After selecting the item Reinstall macOS or Reinstall OS X in Disk Utility, macOS will be reinstalled to the version that was last installed on the Mac.

Recovering macOS (OS X) via Time Machine

If you have a macOS backup created using the Time Machine utility, you can perform a system restore. During such a recovery, the hard drive is wiped and all its contents are replaced with data from the latest macOS and information from the Time Machine backup.

To restore macOS via Time Machine, follow these steps:

Step 1 Start macOS in recovery mode by holding down the Command (⌘) + R or Option (⎇) + Command (⌘) + R keys when you turn on or restart your computer (if booting from the macOS recovery partition fails, then thanks to this keyboard shortcut you will launch macOS recovery over the Internet) until the Apple logo appears on the display

Step 2 Once the download is complete, the utilities window (macOS Utilities / OS X Utilities) will appear. From the utilities window, select Restore from Time Machine backup and click Continue. Next, follow the instructions of the utility

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Mac OS X Yosemite is a system introduced by Apple in 2014. This is the most current and advanced Mac OS among the systems offered by the manufacturer of Apple technology. We invite you to find out how it is done installation from scratch. We will also look at the issue of reinstalling the Yosemite system itself to restore factory settings.

What is the best way to install the system?

Mac OS X Yosemite is available in the Appstore. There are two options for installing it:

• On top of the old system;
• Clean installation from scratch.

You have the option to install Mac OS X Yosemite directly on top of the old OS X Mavericks. This is advisable if you value the current state of the file system, installed programs and their settings. All data will remain in the same place, changes will only affect the operating system. But the performance of many programs may be impaired. Compatibility and update issues can cause a lot of inconvenience.

Installing from scratch eliminates many system problems. Factory settings will be completely restored. This will help get rid of unnecessary installed applications, unnecessary data, etc. Let's look at this process in more detail.

Installing Mac OS X Yosemite from scratch

A clean installation places the system on a formatted hard drive partition. Another option is to use a new drive. The key step is to back up your critical data from your hard drive. You are invited instructions for installing the system from scratch.

System boot

Download OS X Yosemite from the AppStore. We don’t launch anything or try to install anything. We need a system image. Installation is carried out using a bootable USB flash drive.

Creating a USB flash drive

After downloading the update from the Appstore, proceed as follows:

1. Launch Disk Utility;
2. In the left panel, select the drive, on the right, go to the “Disk Partition” tab;
3. In the "Partition Scheme" menu, select "Section 1". The disk name is "Yosemite", the format must be "Mac OS Extended (Journaled)".
4. Go to "Options", select the GUID partition scheme. Click "Apply".
5. Disk Utility begins formatting the flash drive.
6. From the "Utilities" folder, launch "Terminal".
7. To create a flash drive, run the following command:

1. Enter the administrator password.
2. It will take 10-15 minutes to create a bootable USB flash drive.
3. After the procedure is successfully completed, reboot the Mac. When loading, hold down Alt.
4. You are ready to install Mac OS X Yosemite.

Installing Yosemite

After creating a flash drive and rebooting the Mac, follow the instructions:

1. Go to the "Downloads" menu and select "Mac OS X Installer".
2. You need to open Disk Utility and select the disk with the system to format. Go to the "Erase" tab.
3. In the "Format" menu, "Mac OS Extended (Journaled)" must be selected, and the name of the disk is written.
4. Click "Erase", thereby starting the disk formatting process.
5. Close Disk Utility and open the Install Mac OS X section.
6. We specify the Yosemite boot disk and start the installation process.

Starting the installation process involves following the installer's instructions. Select the necessary parameters, the system will soon be ready for use. After installing Mac OS Yosemite, you can start using the system from scratch or transfer files from Time Machine.

Reinstalling Mac OS X Yosemite

If OS X Yosemite is already installed, you may need to reinstall it in the following cases:

• System failures;
• Errors when installing updates;
• Disk cleaning;
• The need to restore factory settings.

So, let's answer the question, how to reinstall Mac OS X Yosemite. To do this, you need to erase your Mac data and reinstall the system. Don't forget to back up your valuable files. To restore factory settings, you need to use the built-in recovery disk. To reinstall the system, an Internet connection is required, as well as a connected power adapter.

The procedure is simple:

1. Restart your Mac. During boot (gray screen), press Command+R.
2. Select "Disk Utility" and click "Continue".
3. Select the disk and click "Erase".
4. In the "Format" section, select Mac OS Extended (journaled), enter a name, and click "Erase".
5. The disk will take some time to clear.
6. Select "Disk Utility" and click "Finish".
7. Go to "Reinstall OS X", click "Continue".
8. Select the disk to use. In most cases it is the only one available.
9. We follow the installer's instructions and finish.
10. The system has been reinstalled!

Restoring or reinstalling software

Mac OS X software

If there is a problem with your Mac software or hardware
problem, you can use recovery utilities in Mac OS X,
to avoid problems and even restore original factory settings
software. These utilities are available in Mac OS X Utilities.
even if your computer does not boot properly.

Mac OS X Utilities lets you do the following:

restore your computer disk using Disk Utility;

Chapter 4

There is a problem - there is a solution

restore software and data from Time backup
Machine;

restore Mac OS X Lion and Apple programs;

restore your computer to factory settings by erasing its disk and reinstalling
Mac OS X Lion and Apple programs.

If a problem is detected with your computer, it automatically opens
Mac OS X Utilities panel. You can also open it manually by rebooting
computer.

To open the Mac OS X Utilities panel, do the following:

Restart your computer while holding down the (x) and R keys.

Some utilities in the Mac OS X Utilities panel require
access to the Internet and App Store for Mac. You may need to make sure that
The computer is connected to the Internet via Ethernet or Wi-Fi.

Connect via Wi-Fi network

Select a network from the Wi-Fi status menu in the top right corner of the screen.

If necessary, enter a password to access the network.

To connect to a closed network, select Connect to Another Network.
Enter your network name and password.

Recovering a disk using Disk Utility

If there is a problem with your computer or when loading
computer You see the Mac OS X Utilities panel, you may need to
restore computer disk.

Chapter 4

There is a problem - there is a solution

Select Disk Utility from the Mac OS X Utilities panel and click
"Continue."

Select a drive or partition from the list on the left and open the First Aid tab.

Click Repair Disk.

If Disk Utility can't fix the disk, try as much as possible
save the information in a backup copy and follow the instructions in the section
“Reinstalling Mac OS X and Apple Software” on page 97.

Information about Disk Utility and its settings can be found in the Help
center, or you can open Disk Utility itself (in the Utilities folder
in Launchpad) and select Help > Disk Utility Help.

Restoring information using a backup copy
Time Machine

If you have previously created Time Machine backups, you can use
"Recovery" utility restores all the contents of the computer
to the state in which it was at a certain point in time
in the past.
Use a Time Machine backup only for recovery
information on the computer from which the backup was created.
To transfer information to a new computer, use the Assistant
migration.

If the backup is on a Time Capsule, make sure your Mac Pro is connected
to the same Ethernet or Wi-Fi network. (To connect to a Wi-Fi network, follow
instructions on page 95).

Chapter 4

There is a problem - there is a solution

In the Mac OS X Utilities panel, select Restore from Time Backup
Machine" and click "Continue".

Select the drive where the Time Machine backup is located, and then
follow the instructions on the screen.

Reinstalling Mac OS X and Apple programs

There are times when you need to reinstall Mac OS X and Apple programs.
When reinstalling the system, you can save all files and settings.

Important.

You can also reinstall and restore from the Mac OS X Utilities panel

Mac OS X Lion Server software, if installed on your
Mac Pro.

Make sure your Mac Pro is connected to the Internet via Ethernet or Wi-Fi.

"Continue."

When prompted to select a drive, select the current Mac OS X drive
(in most cases this is the only option available).

To install additional software, click
"Tune".

Click Install.

You can install Mac OS X without deleting the entire contents of the disk (and
existing files and settings are preserved) or clear the disk first (if
this erases all your data) to prepare the computer for reinstallation
Mac OS X and programs.

Chapter 4

There is a problem - there is a solution

After reinstalling Mac OS X, you can go to the Mac App Store and reinstall
Download the programs that came with your Mac and other programs
that you purchased from the Mac App Store.

before proceeding with software recovery. Apple
is not responsible for possible loss of data.

Restoring your computer to factory settings

Restoring your computer to factory settings deletes everything on it.
yes (accounts, network settings, files and folders). Before recovery
be sure to create a backup copy of the files you need: copy
them to another disk. Make a note of your network settings so that after you reinstall Mac OS X
it was easier to reconnect with her.

Make sure you are connected to the Internet via Ethernet or Wi-Fi.
(To connect to a Wi-Fi network, follow the instructions on page 95.)

In the Mac OS X Utilities panel, select Disk Utility and click
"Continue."

Select the drive in the list on the left and open the Erase tab.

From the Format pop-up menu, choose Mac OS Extended (Journaled)
enter the drive name and then click Erase.

After erasing the disk, select Disk Utility > Finish
Disk Utility."

In the Mac OS X Utilities panel, select Reinstall Mac OS X and click
"Continue."

Chapter 4

There is a problem - there is a solution

Follow the instructions to reinstall Mac OS X and Apple programs
Mac OS X installer.

After restoring Mac OS X and Apple programs, you can, at your discretion,
Restore necessary files and programs from a Time Machine backup.

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 of the operating system or a simple update is required. You will also need to prepare the device for reinstallation (for example, if you are going to sell your device).

Additionally, you can restore from a TimeMachine backup if you have configured this. So, first things first:

1. If you want to update your Mac OS, you can create a backup copy just in case, 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. For a complete reinstallation, you will need to create a copy, just as in the first point. 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, sign out of iCloud 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 the following instructions provide for reinstallation with the installation of the version of the operating system that was installed when you purchased 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 Apple logo, you can release the buttons.
• If you did everything correctly, Disk Utility will launch, with which you will need to clean up 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.

Recovery

Recovering with 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 mac OS Utilities window, select the item of the same name. Please note that all data from the disk will be cleared and replaced with information and files from your backup. The recovery itself is easy to do using the instructions on the computer screen.

If you want to reinstall your Mac device without erasing your data (that is, restore it), repeat the steps in the previous paragraph to launch the Utilities window. If necessary, clean up the disk using a utility you are already familiar with. If you do not know it, then return to the third point of the reinstallation paragraph. After closing the program window, click on “Reinstall mac OS” and follow the steps that the assistant dictates to you.

Conclusion

Dear friends, today we have completely cleared up all the issues related to working with macOS:

1. Reinstallation with cleaning and deleting all data for further sale of the device or transfer to another user.
2. Updating the operating system through the Mac App Store.
3. Restoring the system from a Time Machine backup.
4. Reinstallation while saving personal data.

We hope that everything worked out for you and there are no misunderstandings or questions left. Tell us in the comments how your reinstallation or recovery of macOS went. Enjoy your use, dear readers!

Modern technology is constantly evolving. Is software developing at the same time as technology? under which it operates. But despite continuous improvement, does the software still crash at times? and it needs to be reinstalled. There are several ways to reinstall: recovery, or the so-called installation from scratch.

A special section of the Macbook Air hard drive stores utilities that allow you to restore the system. To enter Recovery Mode during boot, hold down the Command and R buttons until the Apple logo appears. The appearance of the logo indicates the start of the recovery process. Once the recovery is complete, you should load into a clean desktop with the operating system menu bar and the Mac OS Utilities application window. If your desktop boots, it means something is wrong. Restart OS recovery. It is also possible to reinstall the system via the Internet. This is used in case it is impossible to recover from the hard drive when, for example, the recovery partition has been damaged or erased. As in the first case, to start the recovery, hold down the “Command” and “R” keys. Restore occurs via WiFi directly from remote Apple servers. Since the recovery process is completely automated, the user's options are significantly limited. You will be able to select a communication channel or enter a password for the WiFi connection. After the recovery is complete, the MacBook will reboot and you will see the desktop.

The MacBook can also be reinstalled using a remote drive. To do this, enable this function in the settings. Start remote installation of the system from the “Utilities” item, which is located in “Applications”. To ensure a successful system installation, follow all on-screen instructions.

The most modern MacBooks support the ability to reinstall from a USB drive that comes with the device. To do this, connect the flash card to the device and start it. In the window that appears, select “Reinstall MacBook”. Wait for the process to complete and restart your device.

By following these instructions, you can always reinstall the system on a macbook air, and this process will not take much time and will not cause any difficulties.

Not only Windows requires periodic reinstallation of its operating systems, but Mac OS also needs to be reinstalled sometimes. Therefore, users of Apple technology should know how to install Mac OS on a MacBook, and do it themselves.

Free consultation! Free diagnostics! Work guarantee!

The installation will depend on the version of the system that you want to install on your computer. You can download its image from the AppStore or from some convenient torrent, if you do not want to update in the process, but plan to do it from scratch. It is recommended to download from the AppStore. After this, you can begin reinstalling your system. If you want to install updates, you will find useful information on how to find out which Mac OS your laptop already has. To do this:

1. Click on the Apple icon in the top left corner of the screen.
2. Find the line "about the computer", click on it.
3. A window will appear on the screen with information about the version of the installed system.

Installing Mac OS X from scratch

Installing the tenth version of the system is quite simple. But in addition to the computer, you will need a removable storage device with 8 GB of free space. A flash drive will not fit exactly 8, some of the space there is still occupied. Once you have downloaded the system image, further steps will be as follows:

• Right-click on the system image.
• Find the line “Show package contents”, click on it.
• Copy the InstallESD directory (to do this, first go to Contents/SharedSupport/InstallESD.dmg).
• Move and mount the directory to the desktop.

It's time to insert the USB flash drive and open Disk Utility. It will be located in Utilities in the "Programs" tab.

• Specify the media through Disk Utility.
• In the "Our media" field, find the "Partition the disk" tab.
• Select the GUID scheme in the parameters.
• Find the "Restore" tab.
• Drag the system image and select “Our media” as the destination.
• Click on "Restore" and thus create a bootable USB flash drive.

After the flash drive has become bootable, the installation of the system itself begins. To do this, without plugging it out of the slot, click on “restart computer”. Next, you will need to hold down the Opt button (aka Option) on the laptop keyboard to select the boot volume. Having selected “our media”, begin installing the system, following its instructions.

Installing updates

Knowing how to reinstall the system, you can roll back it after the update or simply install the version that suits you most. But Apple offers users to update their system as updates are released; they can be very useful. To update MAC OS, you need to:

The service center is not responsible for your actions. The articles are for informational purposes only and do not constitute instructions for action.