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.
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A list of all Mac OS X versions
Counter-Strike: Global Offensive. It all depends on your rank, the rank of your enemies, the score, how well you do. There's tons of variables. Could be 1 win. You definitely can do it in 1 win. I ranked up from DMG to LE in 1 win, and from LE to LEM in 1 win. You definitely can do it in 1 win. My question is this: How many wins did it take you guys to get from MGE to DMG, and from DMG to LE? I do realize it's more than just wins, but the win does make quite a big difference, as well as personal damage given per round, round wins, etc. There is no answer to that question, because it matters a lot whether you win 16-0 with many mvp's or 16-14 with no mvp's. The closer you get to your skillceiling the more wins you will need. Eventually you get stuck.
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 |
Catalina 10.15 |
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.
Sufficient data storage available on a computer, USB or external drive for the download.A blank USB or DVD (and DVD burner) with at least 4 GB of space if you want to create media. An internet connection (internet service provider fees may apply). Window for mac.
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.
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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
Instruction to downgrade from macOS Catalina
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.
These might also interest you:
Home > Search converters: iso to dmg
Conversion of iso file format to dmg file format beta
Search for iso to dmg converter or software able to handle these file types.
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Convert CD/DVD/HD DVD/Blu-ray disc ISO binary image to Apple Mac disk image.
We have found 7 software records in our database eligible for .iso to .dmg file format conversion.
Converting ISO disk images to DMG format should be easy enough nowadays and can be done in most, if not all modern disk image handling utilities, but it is unlikely you will find a dedicated iso to dmg converter only.
In most cases iso to dmg conversion is achieved because for Mac users .dmg files might be easier to handle compared to .iso files, but most recent disk management utilities for Mac have no trouble with either of these formats.
However, keep in mind that this won't work if you are trying to convert some Windows program installation disks to Mac one, that is simply not possible.
Updated: February 4, 2019
Microsoft Windows software - convert iso to dmg on Windows
AnyToISO
A disk image converter for Microsoft Windows
File extension | Convert | Open | Save | Edit | Create | Import | Export | Extract |
---|---|---|---|---|---|---|---|---|
Convert from iso file | No | No | No | No | Yes | No | Yes | Yes |
to dmg file | Yes, AnyToISO supports dmg file conversion as a target file type. | No | No | No | No | No | No | Yes |
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned iso to dmg. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
gBurner
One of the many CD/DVD burning tools
File extension | Convert | Open | Save | Edit | Create | Import | Export | Extract |
---|---|---|---|---|---|---|---|---|
Yes | Yes | No | No | Yes | No | No | Yes | |
Yes | Yes | No | No | Yes | No | No | Yes |
PowerISO
Application used to manage DAA and other disk images
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File extension | Convert | Open | Save | Edit | Create | Import | Export | Extract |
---|---|---|---|---|---|---|---|---|
Yes | Yes | Yes | Yes | Yes | No | No | Yes | |
No | Yes | No | No | No | No | No | Yes |
Apple macOS / Mac OS X software - convert iso to dmg on OS X
Apple Disk Utility
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A disk mounting utility from Mac
File extension | Convert | Open | Save | Edit | Create | Import | Export | Extract |
---|---|---|---|---|---|---|---|---|
Yes | Yes | Yes | Yes | Yes | No | No | Yes | |
No | Yes | No | No | Yes | Yes | No | Yes |
DropDMG
A program for creating Mac OS X disk images
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File extension | Convert | Open | Save | Edit | Create | Import | Export | Extract |
---|---|---|---|---|---|---|---|---|
No | Yes | No | No | Yes | Yes | No | Yes | |
No | Yes | No | No | Yes | Yes | Yes | Yes |
AnyToISO for Mac
Mac version of popular disk image converting program
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File extension | Convert | Open | Save | Edit | Create | Import | Export | Sims 3 download mac free. Extract |
---|---|---|---|---|---|---|---|---|
No | No | No | No | Yes | No | Yes | Yes | |
Yes | No | No | No | No | No | No | Yes |
DMGConverter
A fisk image converter utility for Mac formats
File extension | Convert | Open | Save | Edit | Create | Import | Export | Extract |
---|---|---|---|---|---|---|---|---|
Yes | No | No | No | No | No | No | No | |
Yes | No | No | No | No | No | No | No |
Additional links: Open iso file, Open dmg file
ISO
An iso file extension is generally used for common CD/DVD disk image format. ISOs are used as a standard backup format of physical disks and are widely supported by burning or virtualization software.
DMG
How Many Wins To Get To Dmg 2
A dmg file extension is used for default disk image format in Mac OS X (macOS) that replaced the older IMG format. It is used much like ISO images on Windows platform.
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