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Note: This will only encrypt and password protect the folder specified, if you are looking for full disk encryption for literally every single thing on the Mac, you would want to enable FileVault instead. FileVault applies similar encryption methodology to the entire hard drive automatically. The safest way to keep your Mac from Flash vulnerabilities is by not having Flash installed at all. Adobe provides a Flash uninstaller for OS X, and you can download it here. The Robin Williams Mac OS X Book contains clear easy to understand information about Mac OS X features such as the login process and login options. I like the way Robin writes and makes a friend of the reader. I liked Robins description of the font collections available in programs written specifically for Mac OS X not for both Mac OS X and OS 9. Apple has several parental control features for the Mac to help protect them as they browse the internet, use apps, and play games. You can even set time limits for your little ones' computer activities, so they don't overuse their allotted screen time. Here's how to set up and manage Parental controls on your Mac. One is Safari or Chrome on the Mac, protected by the Mac antivirus that's under test. The other three use the protection built into Chrome, Firefox, and Microsoft Edge.

1. Protect The Little One Mac Os Download
2. Protect The Little One Mac Os X
3. Protect The Little One Mac Os 11
4. Protect The Little One Mac Os Catalina

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:

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• 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.

Protect The Little One Mac Os X

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

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.

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.

This article lists and describes the different compliance settings you can configure on macOS devices in Intune. As part of your mobile device management (MDM) solution, use these settings to set a minimum or maximum OS version, set passwords to expire, and more.

This feature applies to:

• macOS

As an Intune administrator, use these compliance settings to help protect your organizational resources. To learn more about compliance policies, and what they do, see get started with device compliance.

Before you begin

Create a compliance policy. For Platform, select macOS.

Device Health

• Require a system integrity protection
  • Not configured (default) - This setting isn't evaluated for compliance or non-compliance.
  • Require - Require macOS devices to have System Integrity Protection (opens Apple's web site) enabled.

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Device Properties

• Minimum OS required
  When a device doesn't meet the minimum OS version requirement, it's reported as non-compliant. A link with information on how to upgrade is shown. The device user can choose to upgrade their device. After that, they can access organization resources.

• Maximum OS version allowed
  When a device uses an OS version later than the version in the rule, access to organization resources is blocked. The device user is asked to contact their IT administrator. The device can't access organization resources until a rule changes to allow the OS version.

• Minimum OS build version
  When Apple publishes security updates, the build number is typically updated, not the OS version. Use this feature to enter a minimum allowed build number on the device.

• Maximum OS build version
  When Apple publishes security updates, the build number is typically updated, not the OS version. Use this feature to enter a maximum allowed build number on the device.

System security settings

Password

• Require a password to unlock mobile devices

  • Not configured (default)
  • Require Users must enter a password before they can access their device.

• Simple passwords

  • Not configured (default) - Users can create passwords simple like 1234 or 1111.
  • Block - Users can't create simple passwords, such as 1234 or 1111.

• Minimum password length
  Enter the minimum number of digits or characters that the password must have.

• Password type
  Choose if a password should have only Numeric characters, or if there should be a mix of numbers and other characters (Alphanumeric).

• Number of non-alphanumeric characters in password
  Enter the minimum number of special characters, such as &, #, %, !, and so on, that must be in the password.

  Setting a higher number requires the user to create a password that is more complex.

• Maximum minutes of inactivity before password is required
  Enter the idle time before the user must reenter their password.

• Password expiration (days)
  Select the number of days before the password expires, and they must create a new one.

• Number of previous passwords to prevent reuse
  Enter the number of previously used passwords that can't be used.

Important

When the password requirement is changed on a macOS device, it doesn't take effect until the next time the user changes their password. For example, if you set the password length restriction to eight digits, and the macOS device currently has a six digits password, then the device remains compliant until the next time the user updates their password on the device.

Encryption

• Encryption of data storage on a device
  • Not configured (default)
  • Require - Use Require to encrypt data storage on your devices.

Device Security

Firewall protects devices from unauthorized network access. You can use Firewall to control connections on a per-application basis.

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• Firewall

  • Not configured (default) - This setting leaves the firewall turned off, and network traffic is allowed (not blocked).
  • Enable - Use Enable to help protect devices from unauthorized access. Enabling this feature allows you to handle incoming internet connections, and use stealth mode.

• Incoming connections

  • Not configured (default) - Allows incoming connections and sharing services.
  • Block - Block all incoming network connections except the connections required for basic internet services, such as DHCP, Bonjour, and IPSec. This setting also blocks all sharing services, including screen sharing, remote access, iTunes music sharing, and more.

• Stealth Mode

  • Not configured (default) - This setting leaves stealth mode turned off.
  • Enable - Turn on stealth mode to prevent devices from responding to probing requests, which can be made my malicious users. When enabled, the device continues to answer incoming requests for authorized apps.

Gatekeeper

For more information, see Gatekeeper on macOS (opens Apple's web site).

• Allow apps downloaded from these locations
  Allows supported applications to be installed on your devices from different locations. Your location options:

  • Not configured (default) - The gatekeeper option has no impact on compliance or non-compliance.
  • Mac App Store - Only install apps for the Mac app store. Apps can't be installed from third parties nor identified developers. If a user selects Gatekeeper to install apps outside the Mac App Store, then the device is considered not compliant.
  • Mac App Store and identified developers - Install apps for the Mac app store and from identified developers. macOS checks the identity of developers, and does some other checks to verify app integrity. If a user selects Gatekeeper to install apps outside these options, then the device is considered not compliant.
  • Anywhere - Apps can be installed from anywhere, and by any developer. This option is the least secure.

Next steps

• Add actions for noncompliant devices and use scope tags to filter policies.
• Monitor your compliance policies.
• See the compliance policy settings for iOS devices.