Download and install mac os

How to reinstall macOS

Use macOS Recovery to reinstall the Mac operating system.

Start up from macOS Recovery

Apple silicon

Turn on your Mac and continue to press and hold the power button until you see the startup options window. Click the gear icon labeled Options, then click Continue.

Intel processor

Make sure that your Mac has a connection to the internet. Then turn on your Mac and immediately press and hold Command (⌘)-R until you see an Apple logo or other image.

If you’re asked to select a user you know the password for, select the user, click Next, then enter their administrator password.

Reinstall macOS

Select Reinstall macOS from the utilities window in macOS Recovery, then click Continue and follow the onscreen instructions.

Follow these guidelines during installation:

• If the installer asks to unlock your disk, enter the password you use to log in to your Mac.
• If the installer doesn’t see your disk, or it says that it can’t install on your computer or volume, you might need to erase your disk first.
• If the installer offers you the choice between installing on Macintosh HD or Macintosh HD — Data, choose Macintosh HD.
• Allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.

After installation is complete, your Mac might restart to a setup assistant. If you’re selling, trading in, or giving away your Mac, press Command-Q to quit the assistant without completing setup. Then click Shut Down. When the new owner starts up the Mac, they can use their own information to complete setup.

Other macOS installation options

When you install macOS from Recovery, you get the current version of the most recently installed macOS, with some exceptions:

• On an Intel-based Mac: If you use Shift-Option-Command-R during startup, you’re offered the macOS that came with your Mac, or the closest version still available. If you use Option-Command-R during startup, in most cases you’re offered the latest macOS that is compatible with your Mac. Otherwise you’re offered the macOS that came with your Mac, or the closest version still available.
• If the Mac logic board was just replaced, you may be offered only the latest macOS that is compatible with your Mac. If you just erased your entire startup disk, you may be offered only the macOS that came with your Mac, or the closest version still available.

You can also use these methods to install macOS, if the macOS is compatible with your Mac:

• Use the App Store to download and install the latest macOS.
• Use the App Store or a web browser to download and install an earlier macOS.
• Use a USB flash drive or other secondary volume to create a bootable installer.

Источник

Создание загружаемого установщика для macOS

В качестве загрузочного диска для установки операционной системы на компьютер Mac можно использовать внешний диск или дополнительный том.

Эти расширенные инструкции предназначены в первую очередь для системных администраторов и других пользователей, имеющих опыт работы с командной строкой. Загружаемый установщик не требуется для обновления macOS или переустановки macOS, но он может оказаться удобен, если требуется выполнить установку на несколько компьютеров, не загружая установщик заново каждый раз.

Что нужно для создания загружаемого установщика:

• USB-накопитель или другой дополнительный том, отформатированный в Mac OS Extended, на котором есть не менее 14 ГБ свободного пространства;
• загруженный установщик для macOS Big Sur, Catalina, Mojave, High Sierra или El Capitan.

Загрузка macOS

• Загрузка macOS Big Sur, macOS Catalina, macOS Mojave или macOS High Sierra
  Эти элементы загружаются в папку «Программы» в виде приложения с именем «Установка macOS [ название версии ]». Если после загрузки запустится установщик, завершите его работу без продолжения установки. Чтобы получить подходящий установщик, выполняйте загрузку с компьютера Mac, на котором используется macOS Sierra 10.12.5 или более поздней версии либо El Capitan 10.11.6. Корпоративным администраторам следует производить загрузку с сайта Apple, а не с сервера обновления ПО, размещенного в локальной сети.
• Загрузка OS X El Capitan
  В результате этого действия загрузится образ диска с именем InstallMacOSX.dmg. На компьютере Mac, совместимом с El Capitan, откройте образ диска и запустите с него установщик с именем InstallMacOSX.pkg. Приложение с именем «Установка OS X El Capitan» будет установлено в папку «Программы». Загружаемый установщик создается именно из этого приложения, а не из образа диска или установщика .pkg.

Использование команды createinstallmedia в приложении «Терминал»

1. Подключите USB-накопитель или другой том, используемый для загружаемого установщика.
2. Откройте приложение «Терминал» в подпапке «Утилиты» папки «Программы».
3. Введите или вставьте в приложение «Терминал» одну из следующих команд. Предполагается, что установщик находится в папке «Программы», а имя MyVolume обозначает USB-накопитель или другой используемый вами том. Укажите вместо MyVolume имя своего тома в следующих командах.

Big Sur*:

Catalina*:

Mojave*:

High Sierra*:

El Capitan:

* Если на компьютере Mac установлена операционная система macOS Sierra или более ранней версии, включите аргумент —applicationpath и путь установки аналогично тому, как это делается в случае команды для El Capitan.

После набора команды

1. Нажмите «Ввод», чтобы ввести команду.
2. При появлении запроса введите пароль администратора и нажмите клавишу «Ввод» еще раз. При вводе пароля приложение «Терминал» не отображает вводимые символы.
3. При появлении запроса нажмите клавишу Y , чтобы подтвердить удаление всех данных на томе, затем клавишу «Ввод». Приложение «Терминал» показывает прогресс по мере стирания тома.
4. После стирания тома может быть отображено предупреждение о том, что приложению «Терминал» требуется доступ к файлам на съемном томе. Нажмите «OK», чтобы продолжить копирование.
5. Когда приложение «Терминал» сообщит о завершении процесса, имя тома будет совпадать с именем загруженного установщика, например «Установка macOS Big Sur». После этого можно закрыть приложение «Терминал» и извлечь том.
   

Источник

How to get old versions of macOS

If your Mac isn’t compatible with the latest macOS, you might still be able to upgrade to an earlier macOS, such as macOS Catalina, Mojave, High Sierra, Sierra, or El Capitan.

To get the latest features and maintain the security, stability, compatibility, and performance of your Mac, it’s important to keep your software up to date. Apple recommends that you always use the latest macOS that is compatible with your Mac.

Check compatibility

The version of macOS that came with your Mac is the earliest version it can use. For example, if your Mac came with macOS Big Sur, it will not accept installation of macOS Catalina or earlier.

If a macOS can’t be used on your Mac, the App Store or installer will let you know. For example, it might say that it’s not compatible with this device or is too old to be opened on this version of macOS. To confirm compatibility before downloading, check the minimum hardware requirements:

Download macOS using Safari on your Mac

Safari uses these links to find the old installers in the App Store. After downloading from the App Store, the installer opens automatically.

• macOS Catalina 10.15 can upgrade Mojave, High Sierra, Sierra, El Capitan, Yosemite, Mavericks
• macOS Mojave 10.14 can upgrade High Sierra, Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion
• macOS High Sierra 10.13 can upgrade Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion

Safari downloads the following older installers as a disk image named InstallOS.dmg or InstallMacOSX.dmg. Open the disk image, then open the .pkg installer inside the disk image. It installs an app named Install [ Version Name ]. Open that app from your Applications folder to begin installing the operating system.

• macOS Sierra 10.12 can upgrade El Capitan, Yosemite, Mavericks, Mountain Lion, or Lion
• OS X El Capitan 10.11 can upgrade Yosemite, Mavericks, Mountain Lion, Lion, or Snow Leopard
• OS X Yosemite 10.10can upgrade Mavericks, Mountain Lion, Lion, or Snow Leopard

Источник

Download and install Windows support software on your Mac

After using Boot Camp Assistant to install or upgrade Microsoft Windows on your Mac, you might also need to install the latest Windows support software (drivers) from Apple.

When you install Microsoft Windows on your Mac, Boot Camp Assistant automatically opens the Boot Camp installer, which installs the latest Windows support software (drivers). If that doesn’t happen, or you experience any of the following issues while using Windows on your Mac, follow the steps in this article.

• Your Apple mouse, trackpad, or keyboard isn’t working in Windows.
  Force Touch isn’t designed to work in Windows.
• You don’t hear audio from the built-in speakers of your Mac in Windows.
• The built-in microphone or camera of your Mac isn’t recognized in Windows.
• One or more screen resolutions are unavailable for your display in Windows.
• You can’t adjust the brightness of your built-in display in Windows.
• You have issues with Bluetooth or Wi-Fi in Windows.
• You get an alert that Apple Software Update has stopped working.
• You get a message that your PC has a driver or service that isn’t ready for this version of Windows.
• Your Mac starts up to a black or blue screen after you install Windows.

If your Mac has an AMD video card and is having graphics issues in Windows, you might need to update your AMD graphics drivers instead.

Install the latest macOS updates

Before proceeding, install the latest macOS updates, which can include updates to Boot Camp.

Format a USB flash drive

To install the latest Windows support software, you need a 16GB or larger USB flash drive formatted as MS-DOS (FAT).

1. Start your Mac from macOS.
2. Plug the USB flash drive into your Mac.
3. Open Disk Utility, which is in the Utilities folder of your Applications folder.
4. Choose View > Show All Devices from the menu bar.
5. From the sidebar in Disk Utility, select your USB flash drive. (Select the drive name, not the volume name beneath it.)
   
6. Click the Erase button or tab.
7. Choose MS-DOS (FAT) as the format and Master Boot Record as the scheme.
8. Click Erase to format the drive. When done, quit Disk Utility.

Download the Windows support software

1. Make sure that your Mac is connected to the Internet.
2. Open Boot Camp Assistant, which is in the Utilities folder of your Applications folder.
3. From the menu bar at the top of your screen, choose Action > Download Windows Support Software, then choose your USB flash drive as the save destination. When the download completes, quit Boot Camp Assistant.
   

Install the Windows support software

After downloading the Windows support software to your flash drive, follow these steps to install the software. (If you’re attempting to resolve issues with a Bluetooth mouse or keyboard, it might be easier to use a USB mouse or keyboard until these steps are complete.)

1. Make sure that the USB flash drive is plugged into your Mac.
2. Start up your Mac in Windows.
3. From File Explorer, open the USB flash drive, then open Setup or setup.exe, which is in the WindowsSupport folder or BootCamp folder. When you’re asked to allow Boot Camp to make changes to your device, click Yes.
4. Click Repair to begin installation. If you get an alert that the software hasn’t passed Windows Logo testing, click Continue Anyway.
5. After installation completes, click Finish, then click Yes when you’re asked to restart your Mac.

Learn more

If you can’t download or save the Windows support software:

• If the assistant says that the Windows support software could not be saved to the selected drive, or that the USB flash drive can’t be used, make sure that your USB flash drive has a storage capacity of at least 16GB and is formatted correctly.
• If the assistant doesn’t see your USB flash drive, click Go Back and make sure that the drive is connected directly to the USB port on your Mac—not to a display, hub, or keyboard. Disconnect and reconnect the drive, then click Continue.
• If the assistant says that it can’t download the software because of a network problem, make sure that your Mac is connected to the Internet.
• Make sure that your Mac meets the system requirements to install Windows using Boot Camp.

If a Mac feature still doesn’t work after updating the Windows support software, search for your symptom on the Apple support website or Microsoft support website. Some features of your Mac aren’t designed to work in Windows.

Information about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement. Apple assumes no responsibility with regard to the selection, performance, or use of third-party websites or products. Apple makes no representations regarding third-party website accuracy or reliability. Contact the vendor for additional information.

Источник