How To Open Dmg File On Macbook Air
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File TypeApple Disk Image
| Developer | Apple |
| Popularity | |
| Category | Disk Image Files |
| Format | Binary |
What is a DMG file?
A DMG file is a mountable disk image used to distribute software to the macOS operating system. The file is typically downloaded from the Internet by a Mac user, then double-clicked to install an application on the computer.
Today, software developers typically build and distribute applications for Mac users as DMG, .APP, or .PKG files. DMG files are especially common since their contents can be verified upon installation to ensure they have not been tampered with and they can also be compressed to reduce the size of the installer.
When a Mac user downloads a DMG file, he can simply double-click it to open it with the DiskImageMounter utility that comes with macOS. When the DMG file is opened, it mounts a virtual disk on the desktop and in an Apple Finder window as if it was a CD or a USB flash drive that was just inserted into the computer.
In the Finder window, the Mac user can double-click the program icon, which is an APP file, to run the app. Or the Mac user can drag the program icon to the 'Applications' folder icon to move it to the 'Applications' directory in macOS.
After the software stored in the DMG file is installed, the DMG file is no longer needed. Therefore, DMG files can be deleted after installing the software.
While DMG files are Mac-specific and not intended for use in Windows, there are several Windows programs that can extract their contents or convert them to other formats. Some programs include 7-Zip, PeaZip, and DMG2IMG.
NOTE: The DMG format replaced the .IMG file format, which was previously used in Mac OS Classic.
Unknown files on your Mac? Try File Viewer.| Mac |
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The Finder is the first thing that you see when your Mac finishes starting up. It opens automatically and stays open as you use other apps. It includes the Finder menu bar at the top of the screen and the desktop below that. It uses windows and icons to show you the contents of your Mac, iCloud Drive and other storage devices. It's called the Finder because it helps you to find and organise your files.
Open windows and files
To open a window and see the files on your Mac, switch to the Finder by clicking the Finder icon (pictured above) in the Dock. Switching to the Finder also reveals any Finder windows that may be hidden behind the windows of other apps. You can drag to resize windows and use the buttons to close , minimise or maximise windows. Learn more about managing windows.
When you see a document, app or other file that you want to open, just double-click it.
Change how your files are displayed
To change how files are displayed in Finder windows, use the View menu in the menu bar, or the row of buttons at the top of the Finder window. You can view files as icons , in a list , in columns or in a gallery . And for each view, the View menu provides options to change how items are sorted and arranged, such as by kind, date or size. Learn more about customising views.
When you view files in a gallery, you can browse your files visually using large previews, so it's easy to identify images, videos and all kinds of documents. Gallery View in macOS Mojave even lets you play videos and scroll through multi-page documents. Earlier versions of macOS have a similar but less powerful gallery view called Cover Flow .
Gallery View in macOS Mojave, showing the sidebar on the left and the Preview pane on the right.
Use the Preview pane
The Preview pane is available in all views by choosing View > Show Preview from the menu bar. Or press Shift-Command (⌘)-P to quickly show or hide the Preview pane.
macOS Mojave enhances the Preview pane in several ways:
- More information, including detailed metadata, can be shown for each file. This is particularly useful when working with photos and media, because key EXIF data, like camera model and aperture value, are easy to locate. Choose View > Preview Options to control what information the Preview pane can show for the kind of file selected.
- Quick Actions let you easily manage or edit the selected file.
Use Quick Actions in the Preview pane
With Quick Actions in macOS Mojave, you can take actions on a file without opening an app. Quick Actions appear at the bottom of the Preview pane and vary depending on the kind of file selected.
- Rotate an image
- Mark up an image or PDF
- Combine images and PDFs into a single PDF file
- Trim audio and video files
To manage Quick Actions, click More , then choose Customise. macOS Mojave includes a standard set of Quick Actions, but Quick Actions installed by third-party apps also appear here. You can even create your own Quick Actions using Automator.
Use Stacks on your desktop
macOS Mojave introduces Stacks, which lets you automatically organise your desktop into neat stacks of files, so it's easy to keep your desktop tidy and find exactly what you're looking for. Learn more about Stacks.
The sidebar in Finder windows contains shortcuts to AirDrop, commonly used folders, iCloud Drive, devices such as your hard drives and more. Like items in the Dock, items in the sidebar open with just one click.
To change the items in your sidebar, choose Finder > Preferences from the Finder menu bar, then click Sidebar at the top of the preferences window. You can also drag files into or out of the sidebar. Learn more about customising the sidebar.
Search for files
To search with Spotlight, click the magnifying glass in the menu bar or press Command–Space bar. Spotlight is similar to Quick Search on iPhone or iPad. Learn more about Spotlight.
To search from a Finder window, use the search field in the corner of the window:
When you select a search result, its location appears at the bottom of the window. To get to this view from Spotlight, choose “Show all in Finder” from the bottom of the Spotlight search results.
How To Open Dmg File On Macbook Air Pro
In both Spotlight and Finder, you can use advanced searches to narrow your search results.
Delete files
To move a file to the Trash, drag the file to the Trash in the Dock. Or select one or more files and choose File > Move To Trash (Command-Delete).
To remove a file from the Trash, click the Trash to open it, then drag the file out of the Trash. Or select the file and choose File > Put Back.
How To Install Dmg File
To delete the files in the Trash, choose File > Empty Trash. The storage space used by those files then becomes available for other files. In macOS Sierra, you can set up your Mac to empty the trash automatically.