Mac OS X Yosemite - the system presented 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 your current state 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 excess 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 partition. hard drive. 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:
- Launch Disk Utility;
- In the left panel, select the drive, on the right, go to the “Disk Partition” tab;
- In the "Partition Scheme" menu, select "Section 1". The disk name is "Yosemite", the format must be "Mac OS Extended (Journaled)".
- Go to "Options", select the GUID partition scheme. Click "Apply".
- Disk Utility begins formatting the flash drive.
- From the "Utilities" folder, launch "Terminal".
- To create a flash drive, run the following command:
- Enter the administrator password.
- It will take 10-15 minutes to create a bootable USB flash drive.
- After the procedure is successfully completed, reboot the Mac. When loading, hold down Alt.
- You are ready to install Mac OS X Yosemite.
Installing Yosemite
After creating a flash drive and rebooting 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, and the name of the disk is written.
- Click "Erase", thereby starting the disk formatting process.
- Close Disk Utility and open the Install Mac OS X section.
- Specify boot Yosemite drive and start the installation process.
Starting the installation process involves following the installer's instructions. Select required parameters, the system will be ready for use soon. After Mac installations 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 create backup copy 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 Mac OS X operating system is rightfully considered one of the most reliable and stable, but, unfortunately, it is not completely immune from troubles. This is why a Mac user needs to know how to reinstall Mac OS X via 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 allows you to download current version operating system and install it without resorting to writing files to media. Reinstalling Mac OS X via Recovery is very convenient for MacBook owners, since most new laptops are released without optical drive, and creating a bootable USB flash drive can be quite a hassle, especially for a beginner.
Apple Developers provided the opportunity not only to download the operating system from the network, but also to restore from a backup using Time Machine, and also to correct files using a special “Disk Utility”. If you notice that your Mac's operating system is not working as well as before, you need to start troubleshooting the problem by checking the disk with the standard Disk Utility. If troubleshooting does not help, then you should think about Mac recovery OS X via Time Machine or downloading operating system files from the Internet. We'll look at how to reinstall Mac OS X from the Internet.
How to enter Recovery mode
- First of all, 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 is turned off using Power buttons
- Wait 30-40 seconds (this is done so as not to damage the device’s hard drive) and turn on the Mac using the power button. Immediately after turning it on, hold down ⌘Cmd and R on your keyboard.
- After completing the steps described above, the Mac OS X utility selection menu will appear on the computer screen
- Connect to the Internet via Wi-Fi
- Select "Reinstall Mac OS X" from the list
- Please be patient, as the volume of OS files is quite impressive and a lot depends on the speed of your Internet connection
With its own pre-installed operating system Mac OS. Like all the company's products, it claims to be of exclusive quality and the use of advanced technologies. On this moment The following varieties are available for sale:
- MacBook;
- MacBook Air;
- MacBook Pro.
Find out how to update your Mac 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, 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 already on sale with installed system. 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 new system installed on top of 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, for example Mac OS X, in fact, there will be no differences, but it is still recommended to upgrade to 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:
- Data backup.
- Creating a bootable USB flash drive.
- System installation.
For Reserve copy data, use an external drive and the Time Machine program, which automatically starts when connected removable media. 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 do 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:
- When the name Mac OS Sierra is displayed, click Next.
- Select the drive on which you will install the system (usually called Macintosh HD).
- 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 external media, because after such a procedure they will all be deleted.
If you are lucky enough to pick up a used Mac from a friend or you are going to sell a Mac mini, iMac, Macbook, then it is advisable to reinstall the system so that there is no personal data left on the computer. But what if you don't know or have forgotten your password? account?
In this article, we'll show you how to bypass this problem and restore your Mac to factory settings, even if you don't have the password.
To improve your device's performance, check out our tips for speeding up your Mac.
Restore password
Before you panic about forgotten password account 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've forgotten it.
Check out our instructions for recovering your forgotten Mac login password.
Erase the contents of your Mac
Since you'll be completely deleting all content on your Mac, you'll need a USB drive with macOS ready or internet access that can download several GB worth of content, as this will be used to install macOS.
For getting additional information about this you can read our instructions for reinstalling macOS from via USB or a guide to reinstalling macOS in recovery mode.
Now you are ready to start. First you need to turn off your Mac. Then press the power button and immediately press and hold the keys Control and R until you see the Apple icon or spinning globe icon.
Release the keys and soon after you will see the macOS Utilities window.
There are four options in this window: Restore from backup Time Machine, reinstalling macOS, receiving help online And disk utility. Click on the last one, then select "Continue".
You'll then see a list of all the HD drives that are currently connected to your Mac. The left columns show the names, and the main panel shows the details of the selected drive.
Look at the section "Interior" for your main drive. It is often called Macintosh HD and appears at the top of the list. Click on it so it's highlighted, then click the button "Erase" from the options on the main panel.
A pop-up window will appear with several fields that you will need to fill out. The first is the name, in which you must enter the name of the disk, 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 select GUID Partition Map.
Finally, click "Erase", and the disk will be cleared of all users, applications and content.
Of course, to use the Mac after this, you will need to reinstall the operating system. To do this, return to the menu macOS utilities, select "Reinstall macOS" and follow the onscreen instructions.
In some situations, macOS users may need to reinstall the system. Today we want to introduce you to the methods of performing this procedure.
Technically, there are two options for a new installation of the system - via the Internet and via a boot drive. The methods differ in the available system options and convenience for the end user.
Method 1: Reinstall via the Internet
One of the features of macOS is the ability to install the system using an Internet connection. The only requirement is a stable connection to the World Wide Web. Reinstallation in this case starts when the computer boots and requires pressing a specific key combination, which we will discuss below.
- Open the Apple menu and select the option "Reboot".
- While your computer boots, press and hold the following keyboard shortcuts:
- Release the keys when a spinning globe icon with text appears on the screen "Starting Internet Recovery. This may take a while".
- The text will change to a loading bar after a few seconds - wait until the selected macOS version will download and install.
Attention! Do not disconnect the device from the electrical outlet, and do not close the MacBook lid!
- A window will appear "Utilities", select the item "Reinstall macOS".
- The installation procedure will start, after which the First System Setup Wizard window will appear.
This method will not work in case of some types of Internet connection (mainly VPN connections) or if there is strict NAT on the ISP side. If your Internet connection is not suitable, you can use the method below.
Method 2: Reinstall from bootable media
A more time-consuming, but more reliable method of re-installing macOS is to use a bootable drive, preferably a flash drive. You will first need to download the installation image from the AppStore to your Mac, and then write it to the media by entering certain commands in "Terminal".
The disadvantage of this method is obvious - a bootable drive cannot be created if the computer does not boot the system. In this case, you should try restoring the system from a Time Machine backup or resetting it to factory settings. 
Solutions to possible problems
The process of reinstalling the operating system does not always go smoothly, so we will consider the most common problems.
The computer does not respond to keyboard shortcuts
If your device doesn't respond to the keyboard shortcuts in Method 1, you most likely pressed the buttons too late or released them too early. Please note that depending on the model, the combination must be held for up to 15 seconds. It also cannot be ruled out that the keyboard may fail, especially if a wireless option is used. In this case, it is better to connect a wired device to one of the free ports.
The download process is stuck
If you feel like the download process is frozen when reinstalling via the Internet, just wait - even the system itself warns that the operation may take a long time, especially if throughput communication channel with the worldwide network is less than 4 Mbit/s.
Conclusion
Reinstalling macOS is a fairly simple task - to solve it, you just need to have an Internet connection or a bootable USB flash drive with macOS recorded on it.
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