How to reinstall mac system. Restoring MacOS from a backup. System profiler, network utility, terminal
Majority Mac users updated to new generation operating system by simply pressing the button " Update" V 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.
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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 button " Continue».
3 . In the left side menu select system disk(by default it is called " Macintosh HD") and in the main window go to the " Erase" and format it by specifying the format " Mac OS Extended (Journaled)».
Attention! All data will be deleted from the Mac.
4
. After finishing the formatting process, close " Disk Utility».
5 . Select an item Install OS X in the window " OS X Utilities", if you need to download a copy of OS X El Capitan from the Internet and click the " Continue».
6 . If you plan to use bootable USB flash drive(by creation), then close the window " OS X Utilities».
7. In the window that appears, click Boot disk...
8 . In the window that appears, select the one previously connected to the computer Bootable USB flash drive drive with OS X El Capitan 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.
Any user may need to update the system on their Mac. However, hardly 25% of the population can boast of the ability to do this. But there are many ways that won’t be difficult to learn. This method very simple and fast. The OS can be “refreshed” in just three steps. The first step is to make sure that this system Fits your Mac model. To do this, at the top of the screen on the left side, click on the “Apple” icon, select “About this Mac”, and then “More details”. Next should be indicated personal information. Models that are suitable for OS X Mavericks – iMac (from 2007), MacBook (2008-2009 or newer), MacBook Pro(from 2007), MacBook Air(2008 onwards), Mac mini(from 2009), Mac Pro(from 2008), Xserve (from 2009).
Step two - in the “About this Mac” item you can also find out what version of the OS is installed. Mavericks will only replace - Snow Leopard (10.6.8), Lion (10.7) or Mountain Lion(10.8), however, if you have more than old version, updating to the latest will allow you to use this service. Step Three – Open Mac App Store, “Download” the desired OS. Next, installation will be very simple using the built-in instructions. If for some reason you can’t handle it yourself, don’t take your device to dubious technicians. Contact consultants from stores or user support centers.
Updating MacBook OS
The second step mentioned updating the operating system to a newer version. How to do this? The Mac App Store provides notifications about programs and the system itself when they are ready to be updated. On the notification, click “More details”, after which, if the “Update/Install” buttons are available, download the program or OS.
The “Reboot” button may also be active; this usually happens when installed software/OS requires a reboot to be “assimilated” by the computer.
Reinstalling OS X Sometimes it becomes necessary to reinstall the operating system on a MacBook. Important factor reinstallations - access to the Internet. Restart your Mac by holding down the (⌘) and R keys. Make sure the Internet is connected. Select the reinstallation option, and then “Continue”. Detailed instructions will fully describe further actions , when selecting a disk, select current disk
Mac OS X. Next, click on the “Install” button. Mac OS X Lion has a built-in recovery disk , which can be used both to reinstall the OS and to restore hard data disk or Time Machine. In order to call this disk, you need to restart your Mac by holding down the keys (⌘) + R, as before.
You also have the opportunity to create an external recovery disk, but this will be discussed in detail in another article. This article examined in detail the most simple ways reinstalling the operating system. But it is worth recalling that if non-compliance simple rules
, You may damage your MacBook. If you are not confident in your abilities, it is better to entrust the matter to professionals. Reinstalling macOS (OS X) can be done completely various reasons (computer sale, solution software problems or those with iron). In any case, this is quite simple (especially with respect to computers on Windows based bootable flash drive.
There are three main types of macOS reinstallation - with complete cleaning data (if, for example, you sell a Mac), without deleting personal data and restoring from backup.
Attention!
- Both types of installation require 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.
- 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 Do launch macOS in recovery mode, for which, when turning on or restarting the computer, hold down Command keys(⌘) + R or Option (⎇) + Command (⌘) + R (if booting from macOS Recovery fails, this keyboard shortcut will launch macOS Online Recovery) until the Apple logo appears on 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
For 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 exclude further recovery erased data by third parties, click “Security Settings”, use the slider to specify the number of overwrite cycles over the 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 to New user configured the Mac to your 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 this recovery HDD is cleared 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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Reinstall any computer system or mobile technology carried out when such a need arises. The reasons for it are different: program failure, the desire to replace it with a newer, more advanced and effective version operating systems. The reinstallation process itself is not complicated. You need to have everything at hand. Another installation of the operating system different computers is different. Next, we’ll find out how to do this on a MacBook Pro.
To do this, you will need either a (reinstallation) disk, a USB flash drive or the Internet. Mak must be plugged into a power outlet. Cleaning required hard media using “Disk Utility”, which is located in “Utilities”.
removable media information, then we do everything the same as in points 5 and 6, only without the Internet, but with a disk (flash drive). For reinstalling MacBook you don't need a lot of computer knowledge
software systems
. Now any schoolchild can do this, the main thing is to know what is what and carefully follow all the points of the instructions.
- 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:
- 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. 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. At complete reinstallation you will need, as in the first point, to create a copy. Then be sure to deauthorize your computer or laptop from iTunes. To do this, launch the program, open the “Account” tab, select the authorization item, and then open the deauthorization item. Please note that your Apple ID password may be required. Next, exit iCloud service, after disabling Find My Mac if it was previously enabled. Also log out of your
account
- First of all, please note that next instruction involves reinstallation with installation of the version of the operating system that was installed when purchasing the device. That is, if you purchased a Macbook with OSX Mavericks, and then upgraded it to ElCaptain, then after reinstallation the laptop will have Mavericks again. It is also worth remembering that all your data will be deleted from your computer. This method is suitable for those who want to sell their device, give it to someone, or simply receive the device “out of the box.” If this method does not suit you, then go to the “Recovery” paragraph.
- So, let's get started: immediately after turning on the computer, hold down the key combination Option+Command+R.
- Once you see the logo Apple, you can release the buttons.
- If you did everything correctly, 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 reboots, you will see a setup assistant in front of you, which opens when you turn on computers for the first time. macOS control. If you don't want to configure it (for example, as mentioned above, when selling the device), then use the Command+Q combination to turn off the Mac. This way, you will give the opportunity to configure the settings to another user, your future buyer. Ready! This completes the reinstallation.
Update
Updating macOS is much easier than any other operating system on your computer. This process is accompanied by fewer problems and questions. This will be especially noticeable by those people who have updated Windows at least once. In order to update your Mac computer or laptop, you only need an Internet connection and a little time.
- Launch a store Mac applications AppStore.
- In purchases or in other sections of the store, find new version operating system. Most often it is in the first places of the “Top Chart” or in the “Selection”.
- Click the “Download” button or “Install” if the system has already been downloaded previously. Wait for the operation to complete and continue using the now updated mac OS.
Recovery
Recover from using Time Machine
If you have a backup copy of Time Machine, you will need to boot the device from the recovery partition using the Command+R combination when you turn on the computer. In the service window mac programs OS, select the item of the same name. Please note that all data from the disk will be cleared and replaced with the information and files from your backup. The recovery itself is easy to do using the instructions on the computer screen.
