Reinstallation of any computer system or mobile equipment is made when such a need arises. There are various reasons for it: the failure of the programs, the desire to replace with a newer, more perfect and effective version of the OS. The reinstallation process itself is not complicated. You must have everything at hand. Another installation of the operating system for different computers is different. Next, learn how to do this on your MacBook Pro.
To do this, you will need either a disk (reinstallation), or a USB flash drive or the Internet. Mak must be plugged in. It is mandatory to clean the hard drive using the “Disk Utility”, which is located in the “Utilities”. To do this, in the "Apple" menu, click on "Reboot". And immediately click on the “Command” and “R” buttons, holding until a list of commands is displayed in the window.
Reinstalling the MacBook does not require much knowledge in computer software systems. Now any student can do this, the main thing is to know what for and carefully follow all the points of the instruction.
The Mac OS X operating system is rightfully considered one of the most reliable and stable, but, unfortunately, it is not completely safe from troubles. That is why a Mac user needs to know how to reinstall Mac OS X through Recovery on their own. This reinstallation is possible in all operating systems for Apple computers, starting with Mac OS X 10.7 Lion. Recovery mode, if you have an Internet connection, download the current version of the operating system and install it without resorting to writing files to media. Reinstalling Mac OS X through Recovery is very convenient for MacBook owners, since most new laptops come without an optical drive, and creating a bootable flash drive can be quite a troublesome task, especially for a beginner.
Apple developers have provided the opportunity not only to download the operating system from the network, but also to restore from a backup using Time Machine, as well as to fix files using a special "Disk Utility". If you notice that your Mac operating system does not work as before, you need to start fixing the problem precisely by checking the disk of the regular “Disk Utility”. If troubleshooting did not help, then you should consider restoring Mac OS X via Time Machine or downloading operating system files from the Web. We will look at how to reinstall Mac OS X from the Internet.
How to enter Recovery mode
- First, make sure your Mac is connected to the Internet.
- In the usual way, turn off your computer. Sometimes when the OS freezes, this cannot be done using the menu - in this case, the device turns off using the Power button
- Wait 30-40 seconds (this is done so as not to damage the hard drive of the device) and turn on the Mac with the power button. Immediately after turning on, hold down ⌘Cmd and R on the keyboard.
- After completing the above steps, the Mac OS X Utility menu appears on the computer screen.
- Connect to the Internet via Wi-Fi
- Select "Reinstall Mac OS X" from the list.
- Be patient as the volume of OS files is quite impressive and a lot depends on the speed of connection to the Network
MAC OS, like Windows, sometimes requires reinstallation. This may be due to the slow operation of your MAC device or in connection with its sale (I do not think that you will be satisfied with the sale of MAC with your personal information). Or vice versa, buying with your hands MACBOOK (PRO, AIR) or iMAC with a bunch of obscure files or unnecessary programs. In general, there can be many reasons for reinstalling MAC OS. In this article, I will describe in detail how to reinstall MAC OS and get a “clean” operating system.
So, before you start, you need to transfer all the necessary information to external media, because after reinstalling the MAC OS, it will be practically impossible to either restore.
In order to reinstall MAC OS you need:
1 Connected to a MACBOOK (PRO, AIR) or iMAC power supply;
2 Internet connection with MACBOOK (PRO, AIR) or iMAC;
3 This article and about an hour.
To reinstall MAC OS as described below, it is necessary that you use OS 10.7 and higher (10.8, 10.9). In order to check which version of the operating system you have installed, click on the apple in the upper left corner and select "About this MAC". In the window that opens, there will be information about the installed version of MAC OS.
If you are using a version older than 10.7, it must be updated.
You should boot up "OS X Utilities" if this did not happen, repeat the procedure with a reboot and pressing the keyboard shortcuts "COMMAND" + "R".
Select Disk Utility.
IMPORTANT!!! The following steps will delete all data on your disk, so you need to be sure that there are no necessary files on the MAC.
Then select the drive with the system, on the right, open the "Erase" tab and click the "Erase" button.
Confirm the deletion by clicking the "Erase" button.
After that, close the "Disk Utility" window and select "Reinstall MAC OS".
After that, confirm the installation, click the "Continue" button. With the release of the new OS X 10.10, OS X Yosemite will be installed.
In the next information window, click "Continue".
The next step is to read the license agreement and accept it.
Then select the installation disk. In this case, the choice is obvious. Click the Install button.
After that, the MAC OS download process will begin.
After that, the MAC will automatically reboot and the installation of MAC OS will begin.
After the installation is complete, you will get a “clean” MAC OS, all you need to do is set up some settings.
The next step is to select the country where you plan to use MACBOOK (PRO, AIR) or iMAC.
Select a keyboard layout.
You can connect to a Wi-Fi network (you can skip this step if desired).
If you want to restore data that you previously made using Time Machine or from a Windows computer, select the appropriate item, if you do not plan to restore anything, select "Do not transfer any information" and click "Continue". Data that you transferred to an external medium can be transferred later.
The next step is to log in with your Apple ID. In this example, I will not do this.
Then read the license agreement and accept it.
After that, specify the credentials (username and password) and click "Continue."
The last step is to register your MAC (this step is optional).
And in the end you will get a clean MAC OS.
Video reinstalling the MAC OS operating system on iMAC / MACBOOK PRO / AIR.
In my opinion, the installation of MAC OS is impossible to simplify, even disks with the operating system are not required - pressing a few keys + an hour of time and you have a "clean" MAC OS.
Most Mac users upgrade to a new generation of operating system with a simple click of a button " Refresh”On the Mac App Store, though, it is believed that a clean install of OS X is the most reliable way. In this article we will tell you how to do it.
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How to make a clean install of OS X El Capitan on a Mac with pre-formatted 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" 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 with the format" Mac OS Extended (Journaled)».
Attention! All data will be deleted from the Mac.
4
. After the formatting process is completed, close " Disk utility».
5 . Select 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" Continue».
6 . If you plan to use a bootable USB flash drive (by creation), then close the " 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 pre-connected to the computer and click Reload.
The computer will reboot and prompt you to install the system from a USB flash drive.
It is worth noting that it is possible by pressing a button ⌥Option (Alt) on the keyboard when you turn on the computer. A list of available disks will appear, from which you must select a bootable USB flash drive.
Reinstalling 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 regarding Windows-based computers) process that does not require the creation of a bootable USB flash drive.
There are three main types of reinstalling macOS - with full data cleaning (if you, for example, will sell 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 downloaded directly from Apple servers). If not, then you will need to create a bootable USB flash drive on another Mac or PC.
- If data security is important to you, do not forget to make a backup (if you have a second drive on a 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, for which, when you turn on or restart the computer, hold down the Command (⌘) + R or Option (⎇) + Command (⌘) + R keys (if the macOS recovery partition fails to boot, then thanks to this key combination, you will start macOS recovery over the Internet) until the Apple logo appears on the display
Step 2 Once the download is complete, the utilities window will appear (macOS Utilities / OS X Utilities). Open Disk Utility and format the system hard drive
For this:
- select a volume or disk in the left side menu and click the Erase button
- select “Mac OS Extended (journal)” as the format
- 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 Settings", use the slider to specify the number of overwrite cycles on top of old data and click OK. Overwrite function not available for SSDs
- click Erase and Finish
Step 3 From the utilities window, select Reinstall macOS or Reinstall OS X
Step 4 After downloading and installing macOS, the computer will reboot and the setup assistant will start. If your computer is for sale, press Command (⌘) + Q and select Turn Off to let the new user configure the Mac to their requirements.
Reinstall macOS (OS X) with personal data
On Mac, you can reinstall macOS to the current or older version of the operating system without deleting personal data. The whole process is almost identical to the previous chapter, except that you do not need to perform Step 2 (refuse the “Disk Utility” service and do not format the hard disk). After selecting an item Reinstall macOS or Reinstall OS X in Disk Utility, macOS will be reinstalled to the version that was last installed on Mac.
MacOS Recovery (OS X) via Time Machine
If you have a macOS backup created using Time Machine, you can perform a system restore. During such recovery, the hard drive is erased and all its contents are replaced with fresh macOS data and Time Machine backup information.
To restore macOS through Time Machine, follow these steps:
Step 1: Start macOS in recovery mode, for which, when you turn on or restart the computer, hold down the Command (⌘) + R or Option (⎇) + Command (⌘) + R keys (if the macOS recovery partition fails to boot, then thanks to this key combination, you will start macOS recovery over the Internet) until the Apple logo appears on the display
Step 2 Once the download is complete, the utilities window will appear (macOS Utilities / OS X Utilities). From the utilities window, select Restore from Time Machine backup and click Continue. Next, follow the utility instructions
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