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contain block data) with some added metadata, optionally with one or two layers applied that provide compression and encryption. Īpple disk image files are essentially raw disk images (i.e. The encrypted layer was reverse engineered in an implementation called VileFault (a spoonerism of FileVault). File format Īpple has not released any documentation on the format, but attempts to reverse engineer parts of the format have been successful. Disk images in this format typically have a.
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Universal Disk Image Format (UDIF) is the native disk image format for Mac OS X. smi extension are actually applications that mount an embedded disk image, thus a "Self Mounting Image", intended only for Mac OS 9 and earlier. New Disk Image Format (NDIF) was the previous default disk image format in Mac OS 9, and disk images with this format generally have a. A similar format that supported compression of floppy disk images is called DART. Disk images allow the distributor to control the Finder's presentation of the window, which is commonly used to instruct the user to copy the application to the correct folder.Ī previous version of the format, intended only for floppy disk images, is usually referred to as "Disk Copy 4.2" format, after the version of the Disk Copy utility that was used to handle these images. Even as the use of resource forks declined with Mac OS X, disk images remained the standard software distribution format. Īn Apple Disk Image allows secure password protection as well as file compression, and hence serves both security and file distribution functions such a disk image is most commonly used to distribute software over the Internet.Īpple originally created its disk image formats because the resource fork used by Mac applications could not easily be transferred over mixed networks such as those that make up the Internet. The image will not be mounted unless the user indicates agreement with the license.
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The Disk Copy application had the ability to display a multilingual software license agreement before mounting a disk image.
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In Mac OS X v10.2.3, Apple introduced Compressed Disk Images and Internet-Enabled Disk Images for use with the Apple utility Disk Copy, which was later integrated into Disk Utility in 10.3. Disk image files may also be managed via the command line interface using the hdiutil utility. These utilities can also use Apple disk image files as images for burning CDs and DVDs. Īpple Disk Images can be created using utilities bundled with Mac OS X, specifically Disk Copy in Mac OS X v10.2 and earlier and Disk Utility in Mac OS X v10.3 and later.
Some of the file systems supported include Hierarchical File System (HFS), HFS Plus, File Allocation Table (FAT), ISO9660 and Universal Disk Format (UDF). The quartz-wm window manager included with the XQuartz distribution uses the Apple Public Source License Version 2.Apple Disk Image files are published with a MIME type of application/x-apple-diskimage.ĭifferent file systems can be contained inside these disk images, and there is also support for creating hybrid optical media images that contain multiple file systems. The X.Org software components’ licenses are discussed on the
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Please re-install the latest XQuartz X11 release for Leopard after installing a system software update to OS X 10.5.x Leopard.Īn XQuartz installation consists of many individual pieces of software which have various licenses. Because of this, you may experience conflicts after doing a Software Update from Apple. Since the XQuartz X11 package clobbers Apple's X11.app, their software update will clobber the XQuartz X11 package. OS X Software Updates have included some of the work done by the XQuartz project, but for various reasons, Apple cannot ship the latest and greatest version offered by the XQuartz site. Together with supporting libraries and applications, it forms the X11.app that Apple shipped with OS X versions 10.5 through 10.7. The XQuartz project is an open-source effort to develop a version of the X.Org X Window System that runs on macOS.
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