Reinstall mac system. How to reinstall OS X or restore macOS. How to install the system without formatting the internal drive

Mac OS X Yosemite is a system introduced by Apple in 2014. This is the most up-to-date and perfect Mac OS from the systems offered by the manufacturer of "apple" technology. We invite you to find out how it is performed installation from scratch... We will also analyze 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 from the Appstore. There are two options for installing it:

On top of the old system;
Clean install from scratch.

You have the option to install Mac OS X Yosemite right on top of the old OS X Mavericks. This is useful 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 can be impaired. Compatibility and update issues can cause a lot of inconvenience.

Installing from scratch eliminates many system problems. The factory settings will be completely restored. This will help you get rid of unnecessary installed applications, unnecessary data, etc. Let's take a closer look at this process.

Installing Mac OS X Yosemite from scratch

In a clean install, the system is written to a formatted hard disk partition. Another option is to use a new drive. Backing up critical data from your hard drive is a key step. You are invited instructions for installing the system from scratch.

System load

Download OS X Yosemite from the AppStore. We do not start anything and do not try to install. We need a system image. Installation is carried out using a bootable USB flash drive.

Creating a USB stick

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

We launch the disk utility;
In the left pane, select the drive, on the right - go to the "Disk Partition" tab;
In the "Partition Scheme" menu, select the "Partition 1" item. The disc name is "Yosemite", the format must be "Mac OS Extended (Journaled)".
Go to Options, select the GUID Partition Scheme. Click "Apply".
Disk Utility starts formatting the flash drive.
Launch Terminal from the Utilities folder.
To create a USB flash drive, run the following command:

Enter the administrator password.
It will take 10-15 minutes to create a bootable USB drive.
After successfully completing the procedure, restart your Mac. Hold Alt while loading.
You are now ready to install Mac OS X Yosemite.

Installing Yosemite

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

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

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

Reinstall Mac OS X Yosemite

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

System crashes;
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 disc. Reinstalling the system requires an internet connection and a connected power adapter.

The order is simple:

Reboot your Mac. During boot (gray screen), press Command + R.
Select the item "Disk Utility", click "Continue".
Select the disk, click "Erase".
In the Format section, select Mac OS Extended (Journaled), enter a name, click Erase.
The disk is cleared, it will take some time.
Select the item "Disk Utility", click "Finish".
Go to "Reinstall OS X", click "Continue".
We select the used disk. In most cases, it is the only one available.
We follow the instructions of the installer and finish.
The system is reinstalled!

Repairing or reinstalling software

Mac OS X software

If your Mac software or hardware is experiencing
problem, you can use the recovery utilities in Mac OS X,
to avoid problems and even restore the 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:

recover a 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 the computer to factory settings by erasing its disk and reinstalling
Mac OS X Lion and Apple software.

If there is a problem with your computer, the
Mac OS X Utilities panel. You can also open it manually by restarting
a computer.

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

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

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

Wi-Fi connection

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

If necessary, enter the password to access the network.

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

Recovering a disk using Disk Utility

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

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There is a problem - there is a solution

Select Disk Utility in the Mac OS X Utilities pane and click
"Proceed".

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

Click Fix Disk.

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

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

Recovering information using a backup copy
Time machine

If you have previously created Time Machine backups, you can use
recovery utilities restore all the contents of the computer
to the state in which it was at a certain point in time
in 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 your 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
(see instructions on page 95).

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There is a problem - there is a solution

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

Select the drive that contains the Time Machine backup, and then
follow the instructions on the screen.

Reinstall Mac OS X and Apple Software

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

Important.

In the Mac OS X Utilities panel, you can also reinstall and repair

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

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

"Proceed".

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 erasing the entire contents of the disk (while
keep existing files and settings) or first clean up the disk (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 re-
download the programs that came with your Mac and other programs,
purchased from the Mac App Store.

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

Restoring your computer to factory settings

Restoring your computer to factory settings removes 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 drive. Make a note of your network settings so that after reinstalling Mac OS X
it was easier to reconnect to it.

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

In the Mac OS X Utilities pane, select Disk Utility and click
"Proceed".

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

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

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

In the Mac OS X Utilities pane, select Reinstall Mac OS X and click
"Proceed".

Chapter 4

There is a problem - there is a solution

Follow the instructions to reinstall Mac OS X and Apple software
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 her update. Before proceeding with the actions, 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).

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

If you want to update your Mac OS, you can create a backup just in case so that in case of unforeseen circumstances, you can restore the system.
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.
With a full reinstallation, you will need to create a copy as in the first paragraph. Then, be sure to deauthorize your computer or laptop in iTunes. To do this, start the program, open the "Account" tab, select the authorization item, and then open the deauthorization item. Note that your Apple ID password may be required. Next, sign out of the iCloud service by disabling Find My Mac, if it was previously enabled. Also, sign out of your iMessage and FaceTime account. At this point, your preparation ends. Moving on, friends.

Reinstallation

First of all, please note that the following instruction provides for reinstallation with the installation of the version of the operating system that was installed when the device was purchased. That is, if you purchased a Macbook with OSX Mavericks, and then yourself updated it to ElCaptain, then after reinstallation, the laptop will again have Mavericks. 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 else, or just get the device "out of the box". If this method does not suit you, then go to the paragraph "Recovery".
So, let's get started: immediately after turning on the computer, hold down the Option + Command + R key combination.

Once you see the Apple logo, you can release the buttons.
If you have done everything correctly, then the "Disk Utility" will start, with which you will need to clean up the built-in hard drive. Note that the Extended journal format must be used. Then you can close the window.
Now click on "Reinstall mac OS". Follow the prompts on your computer or laptop screen to follow the steps.
When your device restarts, you will see the setup assistant in front of you, which opens the first time you turn on macOS computers. If you do not want to customize (for example, as mentioned above, when selling the device), then use the combination Command + Q to turn off the Mac. Thus, you provide the opportunity to complete the setup for 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 is especially noticeable by those people who have updated Windows at least once. To update your Mac or laptop, all you need is an internet connection and a little time.

Recovery

Time Machine Recovery

If you have a Time Machine backup, you will need to boot the machine from the recovery partition using the Command + R combination when turning on the computer. In the window of mac OS utilities, select the item of the same name. Please note that all data from the disk will be erased and replaced with information and files from your backup. The recovery itself is easily done with the instructions on the computer screen.

If you want to reinstall your Mac without erasing your data (that is, restore), repeat the steps from the previous paragraph to launch the utility window. If necessary, clean up the disk using the utility you are already familiar with. If you do not know it, then go back to the third paragraph 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 sorted out all the questions about working with macOS:

Reinstallation with cleaning and deletion of all data for the further sale of the device or transfer to another user.
Updating the operating system through the Mac App Store.
Restoring the system from a Time Machine backup.
Reinstallation with preservation of personal data.

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

Modern technology is constantly evolving. Simultaneously with technology, software is also developing? under whose control she works. But despite constant improvement, does the software crash at times? and needs to be reinstalled. There are several ways to reinstall: recovery, or the so-called - installation from scratch.

A dedicated partition on your Macbook Air hard drive contains utilities to help you recover your system. To start 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. After the restore is complete, a clean desktop should load with the operating system menu bar and the Mac OS Utilities window. If your desktop has loaded, then something is wrong. Start OS recovery again. It is also possible to reinstall the system via the Internet. This is used when it is impossible to recover from the hard drive when, for example, the recovery partition has been damaged or deleted. As in the first case, hold down the Command and R keys to start the restore. Recovery is done via WiFi directly from remote Apple servers. Since the recovery process is fully automated, the user's capabilities in it are significantly limited. You can choose a communication channel or enter a password for a WiFi connection. After the recovery is complete, the MacBook will reboot and you will see the desktop.

MacBook can also be reinstalled using a remote drive. To do this, enable this function in the settings. Run remote system installation from the "Utilities" item located in the "Applications". Follow all on-screen instructions to ensure a good installation of your system.

Most modern MacBooks support the ability to reinstall from the 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 the device.

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

Not only does Windows require periodic reinstallation of its operating systems, but Mac OS also needs to be reinstalled occasionally. Therefore, users of "apple" technology should know how to install Mac OS on a MacBook, and do it yourself.

Free consultation! Free diagnostics! Work guarantee!

We can fix all Apple equipment ☎ 953-94-11

The installation will depend on the version of the system 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 still recommended to download from the AppStore. Then you can start reinstalling your system. If you want to install updates, information on how to find out which Mac OS is already on your laptop will be useful to you. For this:

Click on the "apple" icon in the upper left corner of the screen.
Find the line "about the computer", click on it.
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 information medium with free 8 Gb of space. A flash drive for exactly 8 will not fit, part of the space is still occupied there. When you have downloaded the system image, further actions 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 the service disk utility. It will be located in the utilities under the Programs tab.

Specify media via Disk Utility.
In the "Our media" field, find the "Partition disk" tab.
Select a GUID scheme in the options.
Find the "Restore" tab.
Drag the system image, 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 pulling it out of the socket, click on "restart computer". Next, you will need to hold down the Opt (aka Option) button on the laptop keyboard to select the boot volume. After choosing "our media", begin to install the system, following its instructions.

Installing updates

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

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

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 "clean". Instructions for this process are presented below.

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

Clean install macOS: preliminary steps

IMPORTANT: Before you clean install (reinstall, flash, factory reset) your Mac, be sure to check:

Is the Mac linked to your Apple ID and not to any other
Do you remember the credentials (login and password) of your Apple ID. You can check, for example, by logging in (from a computer).

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

How to find out (see) which iPhone, iPad, Mac are linked to Apple ID.
How to recover (reset) forgotten Apple ID password for iCloud, iTunes and App Store.
What gets deleted if you sign out of iCloud on iPhone, iPad, and Mac?

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

1. Make sure you have an internet connection (to install macOS later), as well as an electrical connection in the case of a MacBook.

Attention! Further actions will lead to the complete deletion of ALL data on the Mac - save the necessary information on an external medium in advance;

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

3. During the reboot process, press and hold the keyboard shortcut that suits you best:

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

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

⇧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: macOS Sierra 10.12.4 or higher is required.

4 ... Then the window “ MacOS Utilities "(May be referred to as macOS Utilities on versions below macOS High Sierra). Here you need to choose " Disk Utility " and click " Proceed";

Checking and fixing boot disk errors (recommended)

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

2 ... Click on the First Aid label.

3 ... Click Run. The application will check the boot disk for "health status", ie. performance and will correct any errors. This process may take some time.

4 ... After the verification is complete, click Finish.

Erasing a boot disk

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

2. On the menu "Format" select APFS (for computers with macOS Sierra and older OS, select Mac OS Extended) and press " Erase ";

3. When the disk formatting process is complete, click " To complete" to exit Disk Utilities.

Reinstalling the macOS Operating System (Factory Reset)

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

Note: if you install from scratch, you will have to re-configure your Mac and program settings.

Based on materials from yablyk

If you are lucky enough to pick up a used Mac from a friend or you are going to sell Mac mini, iMac, Macbook, then it is advisable to reinstall the system so that no personal data remains on the computer. But what if you don't know or have forgotten your account password?

In this article, we'll show you how to get around this problem and restore your Mac to factory settings, even if you don't have a password.

To improve the performance of your device, check out our tips for speeding up your Mac.

Restore password

Before you panic about a forgotten account password on your Mac, you should know that resetting it is not that difficult. Every Mac has a built-in recovery mode that will allow you to change your system password if you forget it.

Check out our instructions on how to recover a forgotten Mac login password.

Delete the contents of your Mac

Since you will completely erase all content on your Mac, you will need a prepared USB drive with macOS or internet access that can download several GB of content as this will be used to install macOS.

For more information on this, you can read our guide on how to reinstall macOS using USB or the guide on how to reinstall macOS in recovery mode.

You are now ready to start. First you need to shut down your Mac. Then press the power button and immediately press and hold the keys Control and R until you see the Apple icon or the spinning globe icon.

Release the keys and shortly after that you will see the macOS Utilities window.

There are four options in this window: restore from backup Time machine, reinstalling macOS, getting help online and disk utility... Click on the last one, then select "Proceed".

You will then see a list of all HD drives that are currently connected to your Mac. The left columns show the names, and the main pane shows the data for the selected drive.

Look at the section "Interior" for your main drive. It is often called Macintosh HD and is displayed at the top of the list. Click on it so that it is highlighted, then click on the "Erase" from the options on the main panel.

A pop-up window will appear with several fields that you will need to fill in. The first is the name, in which you must enter the name of the disc, usually Macintosh HD.

Below are two drop-down menus. The first is the format in which to choose MacOS Extended (Journaled) and the second field is called Scheme and here you need to choose GUID Partition Map.

Finally press "Erase" and the drive will be cleared of all users, applications, and content.

Of course, in order to use the Mac afterwards, you will need to reinstall the operating system. To do this, return to the menu macOS utilities, select Reinstall macOS and follow the instructions on the screen.

Reinstallation of macOS (OS X) can be performed for completely different reasons (selling a computer, solving software problems or those with hardware). 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 reinstalling macOS - with a complete data wipe (if, for example, you will be selling a Mac), without deleting personal data, and restoring from a backup.

Attention!

Both types of installation require an active Internet connection (the operating system is directly downloaded from Apple servers). If not, then you will need to create a bootable USB flash drive on another Mac or PC.

If you care about the safety of your data, do not forget to make a backup (if you have a second drive on your Mac or an external hard drive, use the Time Machine utility).

Reinstall macOS (OS X) with full data formatting

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

Step 2 After the download is complete, the Utilities window (macOS Utilities / OS X Utilities) appears. Open "Disk Utility" and format the system hard drive

For this:

select the volume or disk in the left side menu and click on the Erase button
select "Mac OS Extended (Journaled)" as the format
enter a new name for the volume or disk
if you want to completely protect yourself and exclude further recovery of erased data by third parties, click "Security Options", by moving the slider, specify the number of overwriting cycles over the old data and click OK. Overwrite function is not available for SSDs
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 start. If the computer is on sale, press Command (⌘) + Q and select Shut Down to let the new user customize the Mac to their needs

Reinstall macOS (OS X) while preserving personal data

On a Mac, you can reinstall macOS to the current or higher version of the operating system without deleting your personal data. The whole process is almost identical to the previous chapter, except that you do not need to complete Step 2 (refuse the Disk Utility service and do not format the hard disk). After selecting an item Reinstall macOS or Reinstall OS X Disk Utility will reinstall macOS to the version that was last installed on your Mac.

MacOS (OS X) Recovery with Time Machine

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

To restore macOS using 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 you cannot boot from macOS Recovery, then thanks to this keyboard shortcut you will run macOS recovery over the Internet) until the Apple logo appears on the display

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

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Macbook is famous for its stable operation, but software failures are not alien to this machine, including critical ones, when the situation can only be corrected by reinstalling the operating system. This article will show you how to reinstall Mac OS.

However, before rushing to reinstall the system, one important procedure is required - transferring important information to another device, because reinstallation is likely to damage files on the Macbook.

Reinstallation

Is the information you need stored in a safe place? Fine! Then we proceed to reinstall the system. This procedure, let's say right away, is simple and feasible even for an inexperienced user, the main thing is to clearly follow the guide. As for the time spent, the reinstallation will take about an hour.

So let's get started:

Well, almost done - all that remains is to wait for the installer to complete and complete the initial device setup.

Initial setup

The initial setup menu will be loaded automatically, you need:

Once the above items are configured, you will receive a Macbook with a reinstalled operating system. Please note that you can skip some of the initial setup steps, there are corresponding buttons in the items that can be ignored, for example, in item 8 you can click "Do not register".

Let's summarize

Well, now you know how you can reinstall Mac OS on MacBook, and it's worth noting that the above guide works for both Macbook Air and Macbook Pro. The reinstallation procedure, as we promised, is simple and straightforward, here, unlike Windows, you don't even need any disks with the operating system - the laptop will download everything itself, the only condition is access to a high-quality Wi-Fi network. We hope you succeed, and if not, contact the support or service center.