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Apple Dmg File

broken image
Apple
Apple Disk Image
The icon depicts an internal hard drive within a generic file icon.
Filename extension
Internet media type
application/x-apple-diskimage
Uniform Type Identifier (UTI)com.apple.disk-image
com.apple.disk-image-smi
Developed byApple Inc.
Type of formatDisk image

Apple Disk Image is a disk image format commonly used by the macOS operating system. When opened, an Apple Disk Image is mounted as a volume within the Macintosh Finder.

File Name: InstallOSXElCapitan.app.dmg; File Size: 5.6 GB; Developer: Apple; System Requirements for Mac OS X El Capitan 10.11.1 DMG. 10 GB free HDD; 4 GB RAM; Intel Multi-Core Processor; macOS El Capitan 10.11.1 DMG Free Download. Download macOS El Capitan 10.11.1 latest version free DMG image installer for Macintosh by clicking the below button. You can also download Mac OS X El Capitan 10.11.6. MacOS Sierra Final DMG file (One Full — Google Drive) — The macOS Sierra has been this easy to download as we provide. Even heading to Apple's website. 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.

An Apple Disk Image can be structured according to one of several proprietary disk image formats, including the Universal Disk Image Format (UDIF) from Mac OS X and the New Disk Image Format (NDIF) from Mac OS 9. An Apple disk image file's name usually has '.dmg' as its extension.

Features[edit]

Apple Disk Image files are published with a MIME type of application/x-apple-diskimage.

Different 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.[1] Some of the file systems supported include Hierarchical File System (HFS), HFS Plus, File Allocation Table (FAT), ISO9660 and Universal Disk Format (UDF).[1][2]

Apple 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. Mac photo editor for mac os x 10.7. These utilities can also use Apple disk image files as images for burning CDs and DVDs. Disk image files may also be managed via the command line interface using the hdiutil utility.[3]

In Mac OS X v10.2.3, Apple introduced Compressed Disk Images[4] and Internet-Enabled Disk Images for use with the Apple utility Disk Copy, which was later integrated into Disk Utility in 10.3. The Disk Copy application had the ability to display a multilingual software license agreement before mounting a disk image. The image will not be mounted unless the user indicates agreement with the license.[5]

The dark knight rises free game download. An 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.

History[edit]

Apple 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. Even as the use of resource forks declined with Mac OS X, disk images remained the standard software distribution format. 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.

A 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.[1] A similar format that supported compression of floppy disk images is called DART.[1][6]

New Disk Image Format (NDIF) was the previous default disk image format in Mac OS 9,[1] and disk images with this format generally have a .img (not to be confused with raw .img disk image files) or .smi file extension. Files with the .smi extension are actually applications that mount an embedded disk image, thus a 'Self Mounting Image', intended only for Mac OS 9 and earlier.[7][2]

Universal Disk Image Format (UDIF) is the native disk image format for Mac OS X. Disk images in this format typically have a .dmg extension.[1]

File format[edit]

Apple has not released any documentation on the format, but attempts to reverse engineer parts of the format have been successful. The encrypted layer was reverse engineered in an implementation called VileFault (a spoonerism of FileVault).[8]

Apple disk image files are essentially raw disk images (i.e. contain block data) with some added metadata, optionally with one or two layers applied that provide compression and encryption. In hdiutil, these layers are called CUDIFEncoding and CEncryptedEncoding.[1]

UDIF supports ADC (an old proprietary compression format by Apple), zlib, bzip2 (as of Mac OS X v10.4), and LZFSE (as of Mac OS X v10.11)[9] compression internally.

Metadata[edit]

The UDIF metadata is found at the end of the disk image following the data. This trailer can be described using the following C structure.[10] All values are big-endian (PowerPC byte ordering)

The XML plist contains a blkx (blocks) key, with information about how the preceding data fork is allocated. The main data is stored in a base64 block, using tables identified by the magic 'mish'. This 'mish' structure contains a table about blocks of data and the position and lengths of each 'chunk' (usually only one chunk, but compression will create more).[10] The data and resource fork information is probably inherited from NDIF.

Encryption[edit]
File
Apple Disk Image
The icon depicts an internal hard drive within a generic file icon.
Filename extension
Internet media type
application/x-apple-diskimage
Uniform Type Identifier (UTI)com.apple.disk-image
com.apple.disk-image-smi
Developed byApple Inc.
Type of formatDisk image

Apple Disk Image is a disk image format commonly used by the macOS operating system. When opened, an Apple Disk Image is mounted as a volume within the Macintosh Finder.

File Name: InstallOSXElCapitan.app.dmg; File Size: 5.6 GB; Developer: Apple; System Requirements for Mac OS X El Capitan 10.11.1 DMG. 10 GB free HDD; 4 GB RAM; Intel Multi-Core Processor; macOS El Capitan 10.11.1 DMG Free Download. Download macOS El Capitan 10.11.1 latest version free DMG image installer for Macintosh by clicking the below button. You can also download Mac OS X El Capitan 10.11.6. MacOS Sierra Final DMG file (One Full — Google Drive) — The macOS Sierra has been this easy to download as we provide. Even heading to Apple's website. 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.

An Apple Disk Image can be structured according to one of several proprietary disk image formats, including the Universal Disk Image Format (UDIF) from Mac OS X and the New Disk Image Format (NDIF) from Mac OS 9. An Apple disk image file's name usually has '.dmg' as its extension.

Features[edit]

Apple Disk Image files are published with a MIME type of application/x-apple-diskimage.

Different 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.[1] Some of the file systems supported include Hierarchical File System (HFS), HFS Plus, File Allocation Table (FAT), ISO9660 and Universal Disk Format (UDF).[1][2]

Apple 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. Mac photo editor for mac os x 10.7. These utilities can also use Apple disk image files as images for burning CDs and DVDs. Disk image files may also be managed via the command line interface using the hdiutil utility.[3]

In Mac OS X v10.2.3, Apple introduced Compressed Disk Images[4] and Internet-Enabled Disk Images for use with the Apple utility Disk Copy, which was later integrated into Disk Utility in 10.3. The Disk Copy application had the ability to display a multilingual software license agreement before mounting a disk image. The image will not be mounted unless the user indicates agreement with the license.[5]

The dark knight rises free game download. An 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.

History[edit]

Apple 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. Even as the use of resource forks declined with Mac OS X, disk images remained the standard software distribution format. 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.

A 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.[1] A similar format that supported compression of floppy disk images is called DART.[1][6]

New Disk Image Format (NDIF) was the previous default disk image format in Mac OS 9,[1] and disk images with this format generally have a .img (not to be confused with raw .img disk image files) or .smi file extension. Files with the .smi extension are actually applications that mount an embedded disk image, thus a 'Self Mounting Image', intended only for Mac OS 9 and earlier.[7][2]

Universal Disk Image Format (UDIF) is the native disk image format for Mac OS X. Disk images in this format typically have a .dmg extension.[1]

File format[edit]

Apple has not released any documentation on the format, but attempts to reverse engineer parts of the format have been successful. The encrypted layer was reverse engineered in an implementation called VileFault (a spoonerism of FileVault).[8]

Apple disk image files are essentially raw disk images (i.e. contain block data) with some added metadata, optionally with one or two layers applied that provide compression and encryption. In hdiutil, these layers are called CUDIFEncoding and CEncryptedEncoding.[1]

UDIF supports ADC (an old proprietary compression format by Apple), zlib, bzip2 (as of Mac OS X v10.4), and LZFSE (as of Mac OS X v10.11)[9] compression internally.

Metadata[edit]

The UDIF metadata is found at the end of the disk image following the data. This trailer can be described using the following C structure.[10] All values are big-endian (PowerPC byte ordering)

The XML plist contains a blkx (blocks) key, with information about how the preceding data fork is allocated. The main data is stored in a base64 block, using tables identified by the magic 'mish'. This 'mish' structure contains a table about blocks of data and the position and lengths of each 'chunk' (usually only one chunk, but compression will create more).[10] The data and resource fork information is probably inherited from NDIF.

Encryption[edit]

The encryption layer comes in two versions. Version 1 has a trailer at the end of the file, while version 2 (default since OS X 10.5) puts it at the beginning. Whether the encryption is a layer outside of or inside of the blkx metadata (UDIF) is unclear from reverse engineered documentation, but judging from the vfcrack demonstration it's probably outside.[8]

Utilities[edit]

There are few options available to extract files or mount the proprietary Apple Disk Image format. Some cross-platform conversion utilities are:

  • dmg2img was originally written in Perl; however, the Perl version is no longer maintained, and the project was rewritten in C. It extracts the raw disk image from a DMG, without handling the file system inside. UDIF ADC-compressed images (UDCO) have been supported since version 1.5.[11]
  • DMGEXtractor is written in Java with GUI, and it supports more advanced features of dmg including AES-128 encrypted images but not UDCO images.[12]
  • The Sleuth Kit. Handles the DMG format, HFS+, and APFS.

Most dmg files are unencrypted. Because the dmg metadata is found in the end, a program not understanding dmg files can nevertheless read it as if it was a normal disk image, as long as there is support for the file system inside. Tools with this sort of capacity include:

  • Cross-platform: 7-zip (HFS/HFS+), PeaZip (HFS/HFS+).
  • Windows: UltraISO, IsoBuster, MacDrive (HFS/HFS+).[13]
  • Unix-like: cdrecord and mount (e.g. mount -o loop,ro -t hfsplus imagefile.dmg /mnt/mountpoint).[14][15]

Tools with specific dmg support include:

  • Windows:
    • Transmac can handle both UDIF dmgs and sparsebundles, as well as HFS/HFS+ and APFS. It is unknown whether it handles encryption.[16] It can be used to create bootable macOS installers under Windows.[17]
    • A free Apple DMG Disk Image Viewer also exists, but it is unknown how much what it actually supports.[18]
  • Unix-like:
    • darling-dmg is a FUSE module enabling easy DMG file mounting on Linux. It supports UDIF and HFS/HFS+.[19]
See also[edit] References[edit]
  1. ^ abcdefg'hdiutil(1) Mac OS X Manual Page'. Archived from the original on 2016-05-14. Retrieved 2016-05-14.
  2. ^ ab'Mac OS X: Using Disk Copy disk image files'. Archived from the original on 2013-12-19. Retrieved 2013-04-25.
  3. ^hdiutil(1) – Darwin and macOS General Commands Manual
  4. ^'Re: Some apps refuse to launch in 10.2.8! (OT, but very important)'. Archived from the original on 2014-01-17.
  5. ^'Guides'. Apple. Archived from the original on 2009-03-06. Retrieved 2010-10-27.
  6. ^'DART 1.5.3: Version Change History'. Archived from the original on 2013-12-19. Retrieved 2013-04-25.
  7. ^'Software Downloads: Formats and Common Error Messages'. Archived from the original on 2010-12-24. Retrieved 2009-05-06.
  8. ^ ab'VileFault'. 2006-12-29. Archived from the original on 2007-01-09. Retrieved 2010-10-27.
  9. ^Michael Tsai (2015-10-07). 'LZFSE Disk Images in El Capitan'. Archived from the original on 2017-04-09. Retrieved 2017-04-09.
  10. ^ ab'Demystifying the DMG File Format'. Archived from the original on 2013-03-17.
  11. ^'dmg2img'. Archived from the original on 29 November 2010. Retrieved 2010-10-27.
  12. ^'DMGExtractor'. Archived from the original on 2011-01-02. Retrieved 2011-01-03.
  13. ^MacDrive Features / Boot Camp / System Requirements /. 'MacDrive Home page'. Mediafour. Archived from the original on 4 October 2010. Retrieved 2010-10-27.
  14. ^'How To Convert DMG To ISO in Windows, Linux & Mac'. Archived from the original on 2010-03-07.
  15. ^'Convert DMG To ISO using PowerISO'. Archived from the original on 2009-05-02. Retrieved 2009-02-15.
  16. ^'About TransMac for Windows'. www.acutesystems.com.
  17. ^'Convert'. www.winytips.com. winytips. Retrieved 5 May 2020.
  18. ^Olivia Dehaviland (2015-03-03). 'Apple DMG Disk Image Viewer'. DataForensics.org. Archived from the original on 2015-04-02. Retrieved 2015-03-10.
  19. ^'darling-dmg'. darling-dmg. Retrieved 29 March 2015.
External links[edit]
  • Apple Developer Connection A Quick Look at PackageMaker and Installer
  • O'Reilly Mac DevCenter Tip 16-5. Create a Disk Image from a Directory in the Terminal
Retrieved from 'https://en.wikipedia.org/w/index.php?title=Apple_Disk_Image&oldid=979643441'

The Mac OS X Mavericks 10.9 release proved to be the most significant of all the releases made by apple in the Mac operating system X series. Mavericks proved to have a lot of in-built features that made it stand apart from all other operating systems released under the tag of the Mac OS X line up. The major standpoint behind the release of the Mavericks OS was t make sure that there was increased battery life, more adaptability and add in more application and revamp the old applications in terms of aesthetics.

License
Official Installer

File Size
5.0GB / 5.1GB

Language
English

Developer
Apple Inc.

Overview

The Mavericks OS also made sure that the mac system was stable in terms of performance and made the best out of the existing software such that apple didn't have to run the compatibility test on the newly developed software. The OS also packed powerful improvements in terms of graphical efficiency as well as to get the most out of your RAM. All these elements packed together made sure that the Mac OS X Mavericks got a superior hold over the battery performance.

There are also various other features like the improvement in the usage of the applications through aesthetic detailing as well as user-friendliness embedded into the Mac OS makes it even more appealing.

1. iBooks

The iBooks is a beautifully done software that is exclusively built for reading books. This application covers all the aspects of a perfect reading application starting from night mode reading to exclusive fonts, highlighting and taking notes and much more. There is a wide range of collections in the library that allows you to have nearly 2 million book collections. Some of the basic things that come along with the system are the syncing of all the mac devices so that all the books that you register using the Apple device will be available throughout all the devices that are connected across along all the devices.

Dmg Opener For Windows 10 2. Multiple Display support

There was an expectation among the mac users that they wanted to have the extensions of their macs to other displays as well. This was particularly the request from all the graphical designers and people whose life revolved around the heavy usage of monitors and computers. Apple decided to release this feature along with the Mac OS X mavericks to ensure that the need was looked into. It did not require much of the configurations to enable this display configuration. The extensions of the display were just like that done as an extension to other system displays that necessarily didn't have to be an apple monitor. This also made sure that the graphical card was put to the best use.

3. Apple maps

The much-anticipated application from apple was Apple Maps. It is a dedicated map application that was designed for Apple devices to get the best out of your outside world. Apple maps had all the features of a conventional map application with all the revolutionary standpoints that would be covered by a map application. The apple map also displayed adaptive such that the application would adjust the resolution accordingly to the device it is being used in.

Apple decided to release apple maps with the Mac OS X Mavericks keeping in mind that the OS was the revolutionary kind that was released with all the standard features that will remain in Apple devices.

4. Apple calendar

The apple calendar was also a feature that was adored by many with the release of the Mac OS X Mavericks. https://cooluup397.weebly.com/vlc-direct-pro-mac.html. The apple calendar will help you with events and also it will help you integrate the newly added maps application to get your way to a mentioned event in the calendar.

5. iCloud keychain

The iCloud keychain was released along with the Mac OS X Mavericks as there was an update in the framework of Safari to support the keychain feature. The iCloud Keychain is a password keeper that is embedded along with the Mac OS to ensure that all your passwords are kept safe and secure. The Security protocol of iCloud Keychain is so complex that it would definitely be a tough framework to crack into. It saves information starting from credit card information to the Wi-Fi logins as well. https://dolnir.weebly.com/black-ops-mac-torrent.html. This made sure that the Mac OS X Mavericks was much more user-friendly as well with its release.

System Requirements
  • Minimum 2GB of RAM
  • Minimum of 8GB HDD drive
  • It can run on any mac system that can run the OS X mountain lion.
Open Dmg File Apple Download the MAC OS X Mavericks 10.9 ISO and DMG File How To Run Dmg Files

The mac OS X Mavericks are one of the most revolutionary Mac OS X releases that imbibed all the revolutionary features that make apple stand a class apart. you can download the DMG file from the below link and make sure that you have met all the basic system that requires to run the Mac OS X Mavericks on your Mac system without any hassles.

Mac OS X Mavericks 10.9 ISO and DMG Image Download - ISORIVER

The mac OS X Mavericks are one of the most revolutionary Mac OS X releases that imbibed all the revolutionary features that make apple stand a class apart. you can download the DMG file from the below link and make sure that you have met all the basic system that requires to run the Mac OS X Mavericks on your Mac system without any hassles.

Price Currency: USD

Operating System: Mac OS X Mavericks 10.9

What Are Dmg Files

Application Category: OS





broken image