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Hdiutil convert apple.dmg -format UDTO -o apple.iso 3. This will actually create a file called image.iso.cdr in the current directory (even though we asked for the output to be image.iso). This file can be safely renamed to image.iso, copied to a Windows server or machine, and burned with your CD/DVD burner of choice.

To convert a DMG file to ISO in Windows, you will need a special utility. The one we've shown here is called dmg2img, and it can be run from the command line to convert one format to the other. IMG is Apple's old disk image format, which transitioned into DMG with Mac OS X. Aolor DMG to ISO Converter is an app for the Mac platform that offers enhanced management of files as well as a folder. With this program, you will be able to convert the disk images on the Mac platform into a manner that it can be accessed on the Windows platform, and that is the ISO format. Most Popular Software for 2016 – Magic ISO. Convert to ISO/Extract DMG image in a single click with AnyToISO on both Windows and Mac. Complete command-line support. Freeware with ability to upgrade to Pro version. But too bad that the function to “convert dmg to iso” is restricted and won’t be functional until you buy the software. How To Convert DMG Files To ISO Files On Linux.

An ISO file contains optical disc file system and contains elements that would be written in optical disc. It comes with .iso extension but sometime .img extension is also used in some cases like Microsoft Dreamspark. The file which doesn’t contain ISO 9660 but have UDF which comes with .udf extension. It is sector by sector copy of data.

What is ISO FILE

The full form of ISO is International Organisation for Standardization. The ISO name is taken from ISO 9660, used with CD ROM media but it contain a UDF(ISO/IEC 13346) file system ( used for DVDs and Blu-ray Discs). Most of the operating systems like Unix, Linux and Mac OS have built in capability to mount an ISO. Most of the emulator uses .ISO file to create image of CD. Emulator like PCSX2, Dolphin use .iso to emulate Wii and GameCube games and Playstation 2 games respectively.

Benefits of ISO file

• It is the program file which is neatly copied in a single file and it is used to distribute large program over the internet.
• It is used to create backup of CD or DVD because it creates the exact copy carry, and converts all the data with bits from the disc. Whenever the file is copied, it lacks the header file but when iso file is created it covers all the things including the header file.

Softwares used to create iso file

• ISO Recorder
• Magic ISO
• Power ISO
• Any to ISO

What is .dmg file

DMG file is Apple disc image which is used for Mac OS. It comes with .dmg extension. DMG stands for Disc Image File. It has UDIF(Universal Disc Image Format) for Mac OS X with .dmg extension. It is capable for the compressed, encrypted data, file spanning amd some of which are password protected. It is downloaded from internet and mounts a virtual disc on the desktop when opened. Disc image file is only used for Mac OS not for the Windows. DMG file support 128-bit and 256-bit AES encryption.

Benefits of .dmg file:

• It has supporting feature for creating hybrid optical media, that has multiple file system
• It also supports some of the file system like Hierarchical File System (HFS) , HFS Plus, ISO 9660, Universal Disc Format (UDF), File Allocation Table(FAT).
• DMG files are read only file ,allow the file to change nothing after being created. This makes the software more secure and free from any virus.
• It is easy to send more than one file over the internet that contains software and its Installer.
• It has ability to show multilingual software licence agreement before mounting the disc image.

We have so much in Mac that would make it easy for us to convert an ISO file to DMG and DMG file to ISO and also no additional software is required. Although there are some processes that would be used to convert the DMG file into ISO file in Mac OS X.

The first process is by using opening disc utility , the second process comes with the command line and the third via different software.

Opening Disc Utility

This is a powerful technique. We should be careful while doing this because by our single mistake it would easily wipe out data from some of our discs. So be cautious.

Explanation of process:

• First of all we have to insert the CD/ DVD which contains the file that we want to convert into a CD burning capable mac.
• After that, go to the Finder file and open it. After opening click on the application and then double click on the Utilities folder.
• After that, to open the Disc Utility, double click on the application.

Creating DMG file

• After opening the Disc Utility window, go to left and check name of the disc that we want to insert in the highlighted region.
• Then click on the file menu which is at the top and go to downward menu option, click New, then click on Disc Image (name of our disc).
• Give a name to new file and navigate on the desktop to save the file there.
• Choose the compressed image format
• Click on save menu and now we have .dmg file save in the desktop. Now our next task is to burn the file onto a blank CD/DVD.

Burning the DMG file

• Take out the original CD/DVD from the computer and put a blank CD/DVD on it. If you promoted with a pop-up window, click ignore.
• Then after return to Disc Utility and go to top of the window and click the Burn button.
• Then after, go and check out on the desktop and highlight the .dmg file and save. Then click on Burn button.
• Click Burn again in the new window to set the new default setting.
• CD/DVD is automatically ejected, once the program is finished. Now we have a burned CD or DVD with a copy of original file saved in .dmg format.

Second Method

Using Command line:

This is the easiest method to convert the ISO file into DMG by using command line.

Explanation:

• Go to the Finder and open it, then open the terminal by clicking GO > Terminal
• Type the following command on the terminal
• hdiutil convert /path/imagefile.iso –
• format UDRW -o /path/convertedimage.dmg , here /path/imagefile.iso is the path to the file.
• Then after press Enter , it will take few seconds or minutes according to the size of file. After completion, the file comes with .CDR extension. Just rename it to .ISO . The file is ready to use.

Third method via different software

Softwares which are capable to convert the ISO file into DMG

Some of the softwares atr also used to convert the ISO file to DMG file. Some of them are

1. MagicISO: It is a software which is capable to convert many format into disc image file. Click on the MagicISO then click on the File and then click on open our ISO file. Click on Property and then Apple Disc Image and click Save. The ISO file is converted to DMG file. To download the MagicISO go to the official website www.magiciso.com . It is available for 64 bit as well as for 32 bit.

1. PowerISO: It is also another software which is capable of converting many types of format into disc image file. Open the Power ISO and click File and then click on open ISO file. Click on the Properties and then select the Apple Disc Image. Click on the File icon and save it from the drop down menu and click Save. The ISO file is converted to DMG and ready to use. To download the PowerISO go to official website www.poweriso.com .

1. Nero Burning Rom: Like the MagicISO and PowerISO, Nero Burning Rom is also used to convert the ISO file into DMG file. Click on the Nero Burning Rom amd click on the File and then click on open the ISO file and then click on the File and Save As dialog box. “Output File Type” property is changed Disc Image File and the Save it . This is how we convert the ISO file to DMG using Nero Burning Rom. DMG file is ready to use. To download the Nero Burning Rom go to the Official website www.nero.com .

This guide is about the How to Convert a MacOS Installer to ISO. I will try my best so that you understand this guide very well. I hope you all like this guide How to Convert a MacOS Installer to ISO.

Advanced Mac users may want to convert the MacOS Installer to an ISO file. The resulting installer ISO files are typically used to install MacOS on virtual machines such as VMWare or VirtualBox, but can also be used to burn ISO to media to create a boot disk. This provides an alternative to creating a bootable USB flash drive for MacOS installers as well.

This tutorial walks you through the steps to create a MacOS installer ISO file.

In this specific review, we convert the MacOS Mojave installer to an ISO file. You can use the same steps to create an ISO file from virtually any other MacOS Installer that includes createinstallmedia, including building MacOS Catalina ISO or Big Sur, High Sierra, and Sierra by simply replacing the filenames as needed.

How to create a MacOS Mojave ISO or Catalina ISO file from the installer

This process takes the MacOS installer to create an ISO file that can be booted or used as a typical disk file.

1. First, download the MacOS Mojave installer or the MacOS Catalina installer (or the installer you want to convert to ISO) from the Mac App Store
2. When “Install MacOS Mojave.app” or “Install MacOS Catalina.app” is fully loaded and in the / Applications folder, continue
3. Next, open the Terminal application
4. To create a disk image DMG file purchase, enter the following command:

hdiutil create -o / tmp / Mojave -size 8500m -volname Mojave -layout SPUD -fs HFS + J

5. Follow these steps to install the created DMG disk image:

hdiutil attach /tmp/Mojave.dmg -noverify -mountpoint / Volumes / Mojave

6. Next, we use createinstallmedia to create a macOS installer on the installed disk:

sudo / Applications / Install macOS Mojave.app/Contents/Resources/createinstallmedia –volume / Volumes / Mojave –nointeraction

7. When createinstallmedia is complete, here’s how to remove the volume you just created:

hdiutil detach / volume / Install macOS Mojave

8. Now we convert the DMG disk file to an ISO image file (technically a CDR file, but it’s the same as the big one)

hdiutil converts /tmp/Mojave.dmg formats to UDTO -o ~ / Desktop / Mojave.cdr

9. Finally, rename the CDR file extension to ISO to convert the CDR to ISO:

mv ~ / Desktop / Mojave.cdr ~ / Desktop / Mojave.iso

That’s it, now you should have a “Mojave.iso” disk file on your Mac desktop, which is the ISO image of the MacOS installer.

If you plan to use an ISO file for a virtual machine, all you have to do is select the Mojave.iso disk image in the virtual machine application as the boot disk or mount it to the virtual machine like any other disk image. You can also convert ISO files to VDI VirtualBox images as needed.

ISO files are flexible and widely used. They can also be burned to create boot disks and other media, and you can also copy an ISO disc to a USB drive with a dd or perform other operations.

Convert Dmg To Bootable Iso

Whether creating and using a MacOS installer ISO file is easier than simply using a bootable USB flash drive, there are complete use cases, and in some situations ISO is the only usable format (e.g., in certain virtualization situations).

Were you able to create an ISO file from the macOS installer? Do you have another way of making an ISO file for MacOS installers? Let us know in the comments below.

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