Overview
DropDMG is the easiest way to create macOS disk images, which pack entire folders or disks into a single compressed file, either for transport across the Internet or simply for backup. They are Apple's preferred format for distributing Mac software. Disk images are also the only archive format whose contents you can directly access in the Finder. Just drag-and-drop a folder or file, and you're done. Or, you can drag an existing disk image or archive onto DropDMG to convert it to any of the other supported formats or to burn it to CD or DVD.
DropDMG supports advanced options such as signed, encrypted, and segmented disk images; WYSIWYG layout with background pictures and custom volume icons; and rich-text license agreements in multiple languages. There are many time-saving features, and it can also be automated via AppleScript, the command-line, and Automator.
What's new in DropDMG
- Updated the user interface for macOS 11 Big Sur:
- Redesigned the application icon.
- The main window uses the new inline title bar style, the toolbar defaults to icon-only mode and supports the new large icon style, and the toolbar icons have been updated.
- The Preferences window uses the new, centered toolbar style and has updated icons.
- Table views in the Preferences window have been updated.
- The user interface now reflects the fact that macOS 11 removes support for creating NDIF disk images.
- The Layouts section of the manual has updated guidance on background picture dimensions that takes into account the window layout changes in macOS 11.
- Updated the Custom volume icon feature for Big Sur.
- Worked around a macOS bug that prevented progress bars from being drawn.
- Worked around an animation glitch.
- Added support for LZMA-compressed disk images on macOS 10.15 and later. This format is even more tightly compressed than bzip2, with slightly slower compression speed and much faster decompression.
- When using the dropdmg command-line tool, you can now specify additional parameters in combination with --config-name to override the values in the configuration. (This also works with the corresponding AppleScript command and parameters.)
- Configurations now show a Gatekeeper badge on the icon when the disk image is code-signed.
- Various operations that used to require multiple passphrase prompts when dealing with an encrypted disk image now require only one.
- DropDMG no longer lets you try to codesign encryped disk images, as macOS does not support that.
- DropDMG now requires macOS 10.9 or later.
- When encountering various kinds of file permissions errors, DropDMG will now recommend that you grant it Full Disk Access.
- Added more fine-grained control over DropDMG’s layout checks, so that it can still ensure that icon sizes and positions are correct even if you’ve told it to ignore a Finder error that causes the window size to be slightly off.
- DropDMG no longer considers it to be an error if an icon position is off by only a fraction of a point, which can happen with certain combinations of file types and Finder view settings.
- Worked around a bug in macOS 10.15 that could cause a spurious "Permission denied" error when using the Change Image Passphrase…, Convert Image/Archive…, or Verify Image… command.
- Removed support for Growl, as all supported macOS versions now have Notification Center.
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- Intel 64
- OS X 10.9.0 or later
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{hdiutil create -fs HFS+ -srcfolder "__OBJ_PATH__" -volname "__OBJ_NAME_NO_EXTENSION__" "__OBJ_PARENT_PATH__/__OBJ_NAME_NO_EXTENSION__"}
I used a free, old but reliable product called "On My Command" from Abracode to get this service. It is item 509 in the command listings. I have been using it for years. It makes it very handy and fast to have as a Service as opposed to an App.