• Jan 06, 2016  Currently, the only way to open a.dmg disk image in Mac OS 9 is to use either the developer version of Disk Copy (version 6.4), or a beta version of the unreleased 6.5. However, both versions can only open uncompressed images; compressed Disk Images are unusable on Mac OS 9.
• Oct 03, 2005  I knew that.dmg files don't mean zip on OS9, that's why I went for an.iso image. Seems that he's out of luck so far. Besides, come to think about it now, even if his OS 9 could mount the.iso image, what was he going to do with it afterward?
• Sep 22, 2018 A DMG file, which is also known as a DMG image is a mountable disk image created for the Mac OS X. It has the raw block data normally compressed and sometimes encrypted. DMG files are often used to install OS X software that is downloaded from the internet to mount a virtual disk on the Mac PC when opened.
• Mac OS 9 9.2. Mac OS 9.x, based on Mac OS 8 was the final product based on the classic MacOS architecture. Like previous version, it lacks true protected memory or pre-emptive multitasking. MacOS 9 was abandoned in favor of of the Unix-ish NextStep/Openstep based Mac OS X.

1. Mac Os 9 Mount Dmg 3
2. Mac Os 9 Mount Dmg 1

Download Mac OS X Mountain Lion DMG File Installer for version 10.8. Free download and experience Apple's OS X 9th edition with brand new features. Download Mac OS X Mountain Lion DMG File Installer for version 10.8. Free download and experience Apple's OS X 9th edition with brand new features.

Disk Utility User Guide

You can use Disk Utility to create a disk image, which is a file that contains other files and folders.

Note: You can burn information to a CD or DVD using the Burn command in the Finder. See Burn CDs and DVDs.

Create a blank disk image for storage

You can create an empty disk image, add data to it, then use it to create disks, CDs, or DVDs.

1. In the Disk Utility app on your Mac, choose File > New Image > Blank Image.

2. Enter a filename for the disk image, add tags if necessary, then choose where to save it.

   This is the name that appears in the Finder, where you save the disk image file before opening it.

3. In the Name field, enter the name for the disk image.

   This is the name that appears on your desktop and in the Finder sidebar, after you open the disk image.

4. In the Size field, enter a size for the disk image.

5. Click the Format pop-up menu, then choose the format for the disk:

   • If the disk image will be used with a Mac that has a solid state drive (SSD) and uses macOS 10.13 or later, choose APFS or APFS (Case-sensitive).

   • If the disk image will be used with a Mac with macOS 10.12 or earlier, choose Mac OS Extended (Journaled) or Mac OS Extended (Case-sensitive, Journaled).

   • If the disk image will be used with a Mac or Windows computer and is 32 GB or less, choose MS-DOS (FAT); if it’s over 32 GB, choose ExFAT.

6. To encrypt the disk image, click the Encryption pop-up menu, then choose an encryption option.

7. Click the Partitions pop-up menu, then choose a partition layout.

8. Click the Image Format pop-up menu, then choose an option:

   • Sparse bundle disk image: Same as a sparse disk image (below), but the directory data for the image is stored differently. Uses the .sparsebundle file extension.

   • Sparse disk image: Creates an expandable file that shrinks and grows as needed. No additional space is used. Uses the .sparseimage file extension.

   • Read/write disk image: Allows you to add files to the disk image after it’s created. Uses the .dmg file extension.

   • DVD/CD master: Changes the size of the image to 177 MB (CD 8 cm). Uses the .cdr file extension.

9. Click Save, then click Done.

   Disk Utility creates the disk image file where you saved it in the Finder and mounts its disk icon on your desktop and in the Finder sidebar.

   In anthem what does gear 20 dmg mean like. Armorcracker abilities deal +50% damage to armor.Every Element Has Different EffectsYou might not even realize that each element has a different effect on armor or shields. Armorcracker abilities deal -50% damage to shields. Some elements, like fire, have a burn-over-time effect that continues to damage armor. Shieldcracker abilities deal +50% damage to shields. Shieldcracker abilities deal -50% damage to armor.

10. In the Finder, copy your files to the mounted disk image, then eject it.

11. Restore the disk image to a disk.

    For more information about disk image types, see the manual (man) page for hdiutil.

Create a disk image from a disk or connected device

You can create a disk image that includes the data and free space on a physical disk or connected device, such as a USB device. For example, if a USB device or volume is 80 GB with 10 GB of data, the disk image will be 80 GB in size and include data and free space. You can then restore that disk image to another volume.

1. In the Disk Utility app on your Mac, select a disk, volume, or connected device in the sidebar.

2. Choose File > New Image, then choose “Image from [device name].”

3. Enter a filename for the disk image, add tags if necessary, then choose where to save it.

   This is the name that appears in the Finder, where you save the disk image file before opening it.

4. Click the Format pop-up menu, then choose an option:

   • Read-only: The disk image can’t be written to, and is quicker to create and open.

   • Compressed: Compresses data, so the disk image is smaller than the original data. The disk image is read-only.

   • Read/write: Allows you to add files to the disk image after it’s created.

   • DVD/CD master: Can be used with third-party apps. It includes a copy of all sectors of the disk image, whether they’re used or not. When you use a master disk image to create other DVDs or CDs, all data is copied exactly.

5. To encrypt the disk image, click the Encryption pop-up menu, then choose an encryption option.

6. Click Save, then click Done.

   Disk Utility creates the disk image file where you saved it in the Finder and mounts its disk icon on your desktop and in the Finder sidebar.

Important: Don’t create a disk image of a disk that you believe to be failing or that contains corrupted information. The disk image may not serve as a reliable backup.

For technical information about creating a restore disk image, see the Apple Software Restore (ASR) manual (man) page.

Create a disk image from a folder or connected device

You can create a disk image that contains the contents of a folder or connected device, such as a USB device. This method doesn’t copy a device’s free space to the disk image. For example, if a USB device or volume is 80 GB with 10 GB of data, the disk image will be 10 GB in size and include only data, not free space. You can then restore that disk image to another volume.

1. In the Disk Utility app on your Mac, choose File > New Image, then choose Image from Folder.

2. Select the folder or connected device in the dialog that appears, then click Open.

3. Enter a filename for the disk image, add tags if necessary, then choose where to save it.

   This is the name that appears in the Finder, where you save the disk image file before opening it.

4. To encrypt the disk image, click the Encryption pop-up menu, then choose an encryption option.

5. Click the Image Format pop-up menu, then choose an option:

   • Read-only: The disk image can’t be written to, and is quicker to create and open.

   • Compressed: Compresses data, so the disk image is smaller than the original data. The disk image is read-only.

   • Read/write: Allows you to add files to the disk image after it’s created.

   • DVD/CD master: Can be used with third-party apps. It includes a copy of all sectors of the disk image, whether they’re used or not. When you use a master disk image to create other DVDs or CDs, all data is copied exactly.

   • Hybrid image (HFS+/ISO/UDF): This disk image is a combination of disk image formats and can be used with different file system standards, such as HFS, ISO, and UDF.

6. Click Save, then click Done.

   Disk Utility creates the disk image file where you saved it in the Finder and mounts its disk icon on your desktop and in the Finder sidebar.

For technical information about creating a restore disk image, see the Apple Software Restore (ASR) manual (man) page.

Create a secure disk image

If you have confidential documents that you don’t want others to see without your permission, you can put them in an encrypted disk image.

Note: If you want to protect the contents of the system disk, turn on FileVault using the FileVault pane of Security & Privacy Preferences.

1. In the Disk Utility app on your Mac, choose File > New Image > Blank Image.

2. Enter a filename for the disk image, add tags if necessary, then choose where to save it.

   This is the name that appears in the Finder, where you save the disk image file before opening it.

3. In the Name field, enter the name for the disk image.

   This is the name that appears on your desktop and in the Finder sidebar, after you open the disk image.

4. In the Size field, enter a size for the disk image.

5. Click the Format pop-up menu, then choose a format:

   • If you’re using the encrypted disk image with a Mac computer using macOS 10.13 or later, choose APFS or APFS (Case-sensitive).

   • If you’re using the encrypted disk image with a Mac computer using macOS 10.12 or earlier, choose Mac OS Extended (Journaled) or Mac OS Extended (Case-sensitive, Journaled).

6. Click the Encryption pop-up menu, then choose an encryption option.

7. Enter and re-enter a password to unlock the disk image, then click Choose.

   WARNING: If you forget this password, you won’t be able to open the disk image and view any of the files.

8. Use the default settings for the rest of the options:

   • Click the Partitions pop-up menu, then choose Single partition - GUID Partition Map.

   • Click the Image Format pop-up menu, then choose “read/write” disk image.

9. Click Save, then click Done.

   Disk Utility creates the disk image file where you saved it in the Finder and mounts its disk icon on your desktop and in the Finder sidebar.

10. In the Finder , copy the documents you want to protect to the disk image.

11. If you want to erase the original documents so they can’t be recovered, drag them to the Trash, then choose Finder > Empty Trash.

When you’re finished using the documents on the secure disk image, be sure to eject the disk image. As long as it’s available on your desktop, anyone with access to your computer can use the documents on it.

To access the data in a disk image, double-click it. It appears on your desktop, and you can add, remove, and edit files on it just as you would with a disk.

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.

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.

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:

1. Click the App Store icon.
2. Click Purchases in the top menu.
3. Scroll down to find the preferred OS X version.
4. 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

Mac Os 9 Mount Dmg 3

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.

1. Start your Mac holding down Command + R.
2. Prepare a clean external drive (at least 10 GB of storage).
3. Within OS X Utilities, choose Reinstall OS X.
4. Select external drive as a source.
5. 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.

1. Boot your Mac from your standard drive.
2. Connect the external drive.
3. Go to external drive > OS X Install Data.

Mac Os 9 Mount Dmg 1

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.

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