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. Feb 26, 2021 Press and hold all keys in the combination together, not one at a time. Shut down your Mac. Then press the power button to turn on your Mac. Then press and hold the keys as your Mac starts up.
In today’s era of multi-terabyte hard drives and online storage, many of us don’t keep as close an eye on our disk usage as we used to. Still, even the largest drives fill up eventually. If you don’t know how to check your disk space use on your Mac, here’s where to look.
The Finder gives you a couple ways to see how much free disk space you have. These are the easiest ways.
Preview your storage device. In macOS, if you select and item in the Finder and press the spacebar on your keyboard, you get a preview of the item. For example, if you select a text document and then press the spacebar, you can see what’s in the document without actually opening it.
You can use preview to check your storage device’s capacity. Here’s how.
1. Select the storage device on the Desktop. (To make your storage device appear on your Desktop, go to the Finder and select Finder > Preferences, click on General, and modify the setting for Show these items on the Desktop.) Or open a Finder window, look in the left column, under the Devices heading, and select the storage device.
2. Press the spacebar. You should see a window open that shows the capacity of your storage device and the available space.
3. To close the window, press spacebar again, or press Command-W, or click on the close-window icon (the circle X) in the upper left.
Finder window status bar. If you would like to have an overview of your free disk space at all times from the Finder, you can turn on the Finder’s status bar.
1. Open a Finder window if you don’t have one open already (click the Finder’s Dock icon or go to File > New Finder Window).
2. Open the View menu and select Show status bar. This will show you how many items are in the current folder, and if you’re viewing a folder on your hard drive (such as your Applications or Documents folder), you’ll also get a readout of your hard drive’s free space.
1. Find your hard drive in the Finder and select it. If it appears in the Finder window sidebar or on the Desktop (it doesn’t by default—go to Finder > Preferences to change that), click your hard drive’s icon in either of those spots. If your hard drive icon doesn’t appear there, go to Go > Computer, then click the hard drive icon under Devices.
2. Click the File menu, and select Get Info, or press Comand-I on your keyboard.
The Info window shows the capacity, available space, and used space, as well as other information.
In recent versions of macOS (Yosemite or later), you can easily check your disk usage from the About box.
1. Open the Apple menu, then select About This Mac.
2. Click the Storage tab in the toolbar to see how much disk space you have available. (On OS X Mountain Lion or Mavericks, click the More info button, then click Storage.)
You also get a simplified overview of what sort of files are eating up your storage space.
You can also view your free disk space from your Mac’s Disk Utility app. Open Spotlight by clicking the magnifying glass in the upper-right corner of the screen, then type Disk Utility in the search box that appears. Once Disk Utility comes up in the list and is highlighted, press the Enter key. Disk Utility is also found in Applications > Utilities.
Once Disk Utility opens, select your hard drive’s name from the list. You can see your drive’s capacity, its available space, its used space, and other info. You can also check the free space for any drive you have connected to your Mac from this window, be it a USB flash drive or external hard drive.
macOS Big Sur elevates the most advanced desktop operating system in the world to a new level of power and beauty. Experience Mac to the fullest with a refined new design. Enjoy the biggest Safari update ever. Discover new features for Maps and Messages. Get even more transparency around your privacy.
The following models are supported:
To see which model you have, click the Apple icon in your menu bar and choose About This Mac.
Before you upgrade, we recommend that you back up your Mac. If your Mac is running OS X Mavericks 10.9 or later, you can upgrade directly to macOS Big Sur. You’ll need the following:
Go to Software Update in System Preferences to find macOS Big Sur. Click Upgrade Now and follow the onscreen instructions.
If you’re running any release from macOS 10.13 to 10.9, you can upgrade to macOS Big Sur from the App Store. If you’re running Mountain Lion 10.8, you will need to upgrade to El Capitan 10.11 first.
If you don’t have broadband access, you can upgrade your Mac at any Apple Store.
For details about your Mac model, click the Apple icon at the top left of your screen and choose About This Mac. These Mac models are compatible with macOS Big Sur:
Requires a broadband internet connection and microphone (built-in or external).
Supported by the following Mac models:
Requires a microphone (built-in or external).
Requires a broadband internet connection.
Requires a Multi-Touch trackpad, Force Touch trackpad, Magic Trackpad, or Magic Mouse.
Force Touch gestures require a Force Touch trackpad.
VoiceOver gestures require a Multi-Touch trackpad, Force Touch trackpad, or Magic Trackpad.
Requires a FaceTime or iSight camera (built-in or external) or USB video class (UVC) camera.
Audio calls require a microphone (built-in or external) and broadband internet connection.
Video calls require a built-in FaceTime camera, an iSight camera (built-in or external), or a USB video class (UVC) camera; and broadband internet connection.
High dynamic range (HDR) video playback is supported by the following Mac models:
Dolby Atmos soundtrack playback is supported by the following Mac models:
Supported by the following Mac models:
Supported by all iPad models with Apple Pencil support:
Requires an iPhone or iPad that supports iOS 12 or later.
Requires an iPhone with iOS 13 or later or an iPad with iPadOS 13 or later.
Requires an iPhone or iPad with a Lightning connector or with USB-C and iOS 8 or later.
Requires an iPhone or iPad with cellular connectivity, a Lightning connector or USB-C, and iOS 8.1 or later. Requires Personal Hotspot service through your carrier.
Requires an iPhone or iPad with a Lightning connector or with USB-C and iOS 10 or later.
Requires an Apple Watch with watchOS 3 or later or an iPhone 5 or later.
Requires an Apple Watch with watchOS 6 or later or an iPhone 6s or later with iOS 13 or later.
Requires a MacBook Pro or MacBook Air with Touch ID, an iPhone 6 or later with iOS 10 or later, or an Apple Watch with watchOS 3 or later.
Requires an iPhone with iOS 8 or later and an activated carrier plan.
Requires an iPhone with iOS 8.1 or later and an activated carrier plan.
Requires an iPhone with iOS 12 or later and a configured Home app.
AirDrop to iOS and iPadOS devices requires an iPhone or iPad with a Lightning connector or with USB-C and iOS 7 or later.
AirPlay Mirroring requires an Apple TV (2nd generation or later).
AirPlay for web video requires an Apple TV (2nd generation or later).
Peer-to-peer AirPlay requires a Mac (2012 or later) and an Apple TV (3rd generation rev A, model A1469 or later) with Apple TV software 7.0 or later.
Requires an external storage device (sold separately).
Requires an iPhone with iOS 14 and a compatible electric vehicle.
Requires an iPhone running iOS 14 or an iPad running iPadOS 14.
Allows Boot Camp installations of Windows 10 on supported Mac models.
Requires Microsoft Office 365, Exchange 2016, Exchange 2013, or Exchange Server 2010. Installing the latest Service Packs is recommended.
Supports OS X 10.7 or later and Windows 7 or later.
Available only to persons age 13 or older in the U.S. and many other countries and regions.
The improved Retouch tool is supported on the following Mac models: