DMG is a disk image format for Mac just like an ISO file in Windows. That means, it is possible to mount a DMG file on a virtual disk or write it to a DVD and access its contents. A macOS installation package with DMG extension enables creating bootable installer DVDs. My first experience with burning a DMG file to DVD was actually on Windows, back in 2013, when Mountain Lion was the operating system. I accidentally formatted the hard disk of my iMac and lost the recovery partition in the process. The only option left for me was buying an OS X Lion Installer disc as the Internet Recovery required a lot of bandwidth and time. Later, I found a way to burn macOS DMG file to a bootable DVD on my Windows laptop. Eventually, I restored my iMac to OS X 10.8 using the same DVD as macOS installation disc.
Steps to burn DMG file to a macOS bootable DVD in Windows
Leopard (SL- DVD):: Ru. Making a back up copy of OSX Leopard install disk on a SL- DVD imgur. Like OS X 10.5, Leopard is now longer downloadable from Apple Store. However, if you are still want to download this very old version of Mac OS X, In the following words, we share Mac OS X 10.6 Snow. Feb 24, 2018 - DMG is a disk image format for Mac just like an ISO file in Windows. That means, it is possible to mount a DMG file on a virtual disk or write it to.
This is about burning a Mac OS X installer in DMG format (InstallESD.DMG) to a DVD in Windows environment. Please note that it’s an old method applicable for Mac OS X Mountain Lion. However, the procedure is somewhat same if you download a compatible macOS High sierra or Mojave in DMG format for Transmac on Windows.
Let’s see the steps and requirements to achieve what you see in the video.
- Get macOS Installer in DMG format. (Check below for macOS High Sierra and Mojave)
- In the video we use OS X 10.8 Mountain Lion downloaded from the Mac app store. You could also find a copy from the Internet.
- Install the free Windows application 7-ZIP (download) to extract and locate InstallESD.DMG, which includes all files to form a bootable macOS DVD.
- Now, download and install TransMac version 12 (15-day trial) for Windows 10 from this link.
- Run Transmac app as administrator, by right-clicking on its icon.
- Click on the File tab at the top, and select the option “Open Disk Image” to load macOS installer DMG file to the software.
- Find the DMG file loaded on the left side, right-click on it and choose to burn it to DVD.
- Once you write InstallESD.DMG file to DVD on Windows, load it to a Mac and start it.
- Press the Option key and select the listed DVD as your installation source.
The macOS High sierra and Mojave DMG files have a size around 5.8 GB, which is above the capacity of a normal DVD. Therefore, in this case, you need a dual-layer (8.5 GB) DVD to burn DMG file to a bootable DVD on Windows and Mac. Alternatively, if your Mac doesn’t have a DVD drive, You may consider making a bootable macOS USB installer.
Make a macOS High Sierra install DVD in Windows PC from DMG/ISO image
Apple has changed the file architecture of the macOS installer from OS X Mavericks 10.9. Hence, you cannot follow the above-given technique to directly extract InstallESD.DMG in Windows and make it a bootable DVD in newer macOS variants like Mojave and High Sierra. It is possible to locate InstallESD.DMG or Basesystem.DMG from the ‘Shared Support’ folder inside macOS installation package ending with .APP extension, but still, you cannot make it bootable for a USB or DVD.
A workaround for this problem is to create the DMG file in a Mac itself from the official macOS installer. However, most people searching for methods to burn macOS DVD on Windows don’t have a Mac in working state. We have converted macOS Mojave and High Sierra app to DMG format for such users.
This upload is hosted on OneDrive for quick and easy downloads. Although Mojave is the newest macOS release, it is not compatible with older iMacs and MacBook Pros. Hence, we also provide High Sierra in DMG format for those who want it. For personal use on your Mac only. We will set an expiry date for the download link to prevent leaching and hot-linking.
Convert the downloaded macOS Mojave or High Sierra DMG to ISO or IMG
You may convert the macOS in DMG extension to a Windows-friendly format like ISO or IMG if Transmac doesn’t work or the 15-day trial expires. Also, Some people may want High Sierra in ISO format to boot it from Virtualbox software on Windows.
Download DMG to IMG 1.6.7
Extract the tool to the folder where you have macOS Mojave or High Sierra DMG installer. Then, right-click and open the DMG file and point to the DMG2IMG program. The conversation starts immediately, showing the progress in a command-line interface.
Windows 10 natively support mounting or burning files with ISO and IMG extensions. Hence, IMG is just enough for the purpose if burning DMG to DVD in Windows PC is the sole requirement. to do this, right-click on the IMG file and pick the option “bun to DVD disc,” and follow the instructions.
Again, in case you need, convert the IMG file generated above to ISO with another freeware. Download IMG to ISO, here.
Currently, we don’t have a direct download links for macOS Mojave or High Sierra in ISO format. You may download the DMG file and convert it as explained above.
Alternative options to burn DMG in Windows 10 without DVD drive.
If you have I an old iMac or MacBook Pro with a DVD slot, you may use the above method to restore macOS through a bootable DVD installer created from a DMG source. However, as you know, none of the new Macs has an optical drive. Let’s check out a few alternatives.
- Format a USB Drive to GPT partition scheme in Windows. Next, restore the macOS Mojave or High Sierra DMG using Transmac.
- Get a portable DVD writer to boot into macOS installer.
External hard disks also work well for this requirement provided the file system is in the HFS+ format with GUID partition scheme.
Burn DMG to DVD in macOS Mojave 10.14
Looking for a way to burn the Mojave or High Sierra DMG Installer on your Mac computer? Here is the simplest and universal method to write files with DMG extension to DVD disc on macOS.
Right-click on the DMG file. Now, as shown in the screenshot, choose the option ” Burn Disk images to Disc.” Then, select the options as required. Keep the burning speed at the lowest rate to avoid write errors, although chances are rare.
So, you’ve decided to download an older version of Mac OS X. There are many reasons that could point you to this radical decision. To begin with, some of your apps may not be working properly (or simply crash) on newer operating systems. Also, you may have noticed your Mac’s performance went down right after the last update. Finally, if you want to run a parallel copy of Mac OS X on a virtual machine, you too will need a working installation file of an older Mac OS X. Further down we’ll explain where to get one and what problems you may face down the road.
A list of all Mac OS X versions
We’ll be repeatedly referring to these Apple OS versions below, so it’s good to know the basic macOS timeline.
|Cheetah 10.0||Puma 10.1||Jaguar 10.2|
|Panther 10.3||Tiger 10.4||Leopard 10.5|
|Snow Leopard 10.6||Lion 10.7||Mountain Lion 10.8|
|Mavericks 10.9||Yosemite 10.10||El Capitan 10.11|
|Sierra 10.12||High Sierra 10.13||Mojave 10.14|
STEP 1. Prepare your Mac for installation
Given your Mac isn’t new and is filled with data, you will probably need enough free space on your Mac. This includes not just space for the OS itself but also space for other applications and your user data. One more argument is that the free space on your disk translates into virtual memory so your apps have “fuel” to operate on. The chart below tells you how much free space is needed.
Note, that it is recommended that you install OS on a clean drive. Next, you will need enough disk space available, for example, to create Recovery Partition. Here are some ideas to free up space on your drive:
- Uninstall large unused apps
- Empty Trash Bin and Downloads
- Locate the biggest files on your computer:
Go to Finder > All My Files > Arrange by size
Then you can move your space hoggers onto an external drive or a cloud storage.
If you aren’t comfortable with cleaning the Mac manually, there are some nice automatic “room cleaners”. Our favorite is CleanMyMac as it’s most simple to use of all. It deletes system junk, old broken apps, and the rest of hidden junk on your drive.
Download CleanMyMac for OS 10.4 - 10.8 (free version)
Download CleanMyMac for OS 10.9 (free version)
Download CleanMyMac for OS 10.10 - 10.14 (free version)
STEP 2. Get a copy of Mac OS X download
Normally, it is assumed that updating OS is a one-way road. That’s why going back to a past Apple OS version is problematic. The main challenge is to download the OS installation file itself, because your Mac may already be running a newer version. If you succeed in downloading the OS installation, your next step is to create a bootable USB or DVD and then reinstall the OS on your computer.
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How to download older Mac OS X versions via the App Store
If you once had purchased an old version of Mac OS X from the App Store, open it and go to the Purchased tab. There you’ll find all the installers you can download. However, it doesn’t always work that way. The purchased section lists only those operating systems that you had downloaded in the past. But here is the path to check it:
- Click the App Store icon.
- Click Purchases in the top menu.
- Scroll down to find the preferred OS X version.
- Click Download.
This method allows you to download Mavericks and Yosemite by logging with your Apple ID — only if you previously downloaded them from the Mac App Store.
Without App Store: Download Mac OS version as Apple Developer
If you are signed with an Apple Developer account, you can get access to products that are no longer listed on the App Store. If you desperately need a lower OS X version build, consider creating a new Developer account among other options. The membership cost is $99/year and provides a bunch of perks unavailable to ordinary users.
Nevertheless, keep in mind that if you visit developer.apple.com/downloads, you can only find 10.3-10.6 OS X operating systems there. Newer versions are not available because starting Mac OS X Snow Leopard 10.7, the App Store has become the only source of updating Apple OS versions.
Purchase an older version of Mac operating system
You can purchase a boxed or email version of past Mac OS X directly from Apple. Both will cost you around $20. For the reason of being rather antiquated, Snow Leopard and earlier Apple versions can only be installed from DVD.
Buy a boxed edition of Snow Leopard 10.6
Get an email copy of Lion 10.7
Get an email copy of Mountain Lion 10.8
The email edition comes with a special download code you can use for the Mac App Store. Note, that to install the Lion or Mountain Lion, your Mac needs to be running Snow Leopard so you can install the newer OS on top of it.
How to get macOS El Capitan download
If you are wondering if you can run El Capitan on an older Mac, rejoice as it’s possible too. But before your Mac can run El Capitan it has to be updated to OS X 10.6.8. So, here are main steps you should take:
1. Install Snow Leopard from install DVD.
2. Update to 10.6.8 using Software Update.
3. Download El Capitan here.
“I can’t download an old version of Mac OS X”
If you have a newer Mac, there is no physical option to install Mac OS versions older than your current Mac model. For instance, if your MacBook was released in 2014, don’t expect it to run any OS released prior of that time, because older Apple OS versions simply do not include hardware drivers for your Mac.
But as it often happens, workarounds are possible. There is still a chance to download the installation file if you have an access to a Mac (or virtual machine) running that operating system. For example, to get an installer for Lion, you may ask a friend who has Lion-operated Mac or, once again, set up a virtual machine running Lion. Then you will need to prepare an external drive to download the installation file using OS X Utilities.
After you’ve completed the download, the installer should launch automatically, but you can click Cancel and copy the file you need. Below is the detailed instruction how to do it.
STEP 3. Install older OS X onto an external drive
The following method allows you to download Mac OS X Lion, Mountain Lion, and Mavericks.
- Start your Mac holding down Command + R.
- Prepare a clean external drive (at least 10 GB of storage).
- Within OS X Utilities, choose Reinstall OS X.
- Select external drive as a source.
- Enter your Apple ID.
Now the OS should start downloading automatically onto the external drive. After the download is complete, your Mac will prompt you to do a restart, but at this point, you should completely shut it down. Now that the installation file is “captured” onto your external drive, you can reinstall the OS, this time running the file on your Mac.
- Boot your Mac from your standard drive.
- Connect the external drive.
- Go to external drive > OS X Install Data.
Locate InstallESD.dmg disk image file — this is the file you need to reinstall Lion OS X. The same steps are valid for Mountain Lion and Mavericks.
How to downgrade a Mac running later macOS versions
If your Mac runs macOS Sierra 10.12 or macOS High Sierra 10.13, it is possible to revert it to the previous system if you are not satisfied with the experience. You can do it either with Time Machine or by creating a bootable USB or external drive.
Instruction to downgrade from macOS Sierra
Instruction to downgrade from macOS High Sierra
Instruction to downgrade from macOS Mojave
Before you do it, the best advice is to back your Mac up so your most important files stay intact. In addition to that, it makes sense to clean up your Mac from old system junk files and application leftovers. The easiest way to do it is to run CleanMyMac X on your machine (download it for free here).
Visit your local Apple Store to download older OS X version
If none of the options to get older OS X worked, pay a visit to nearest local Apple Store. They should have image installations going back to OS Leopard and earlier. You can also ask their assistance to create a bootable USB drive with the installation file. So here you are. We hope this article has helped you to download an old version of Mac OS X. Below are a few more links you may find interesting.