1. Go Trigger Macos App Installer Package Installer
2. Macos Convert App To Pkg
3. App Installer Windows 10
4. Macos App Download
5. App Inventor

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.

The concept of PKG uninstallation is not there in OS X. A PKG/MPKG can have certain pre install and post install scripts associated with that. What is done in PKG scripts is always upto the PKG creator. As a layman we cannot go ahead and uninstall a PKG. Microsoft App Installer for Windows 10 makes sideloading Windows 10 apps easy: Just double-click the app package, and you won't have to run PowerShell to install apps. App Installer presents the package info like app name, publisher, version, display logo, and the capabilities requested by the app. Get right into the app, no hassles-and if.

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
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.

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

Go Trigger Macos App Installer Package Installer

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.

These might also interest you:

The following article uses options that are available starting with the Freeware edition and project type.

This tutorial will show you how to create installers for your Visual Studio solutions using Visual Studio 2017.

We will start by adding an Advanced Installer Project to an existing solution, editing it and creating a package. Afterwards, we will include and a new Visual Studio project to the solution and build both projects in a single package.

• 1. Open the Visual Studio solution
• 2. Add an Advanced Installer Project to the solution
• 3. Create the first install package
• 4. Edit the installer project
• 5. Add another Visual Studio Project to the solution
• 6. Create the final install package
• 7. Automatically import .VDPROJ files (optional)
• 8. Video tutorial
• 9. See also

1. Open the Visual Studio solution

Open the solution for which you want to create the install package.

2. Add an Advanced Installer Project to the solution

Macos Convert App To Pkg

Once the Visual Studio solution is loaded:

• From the “New Project” dialog select Advanced Installer Project
• In the “Solution” field select Add to solution option
• In the “Name” field you can write a name for your project
• Press to add the project to the solution

By default, when adding an Advanced Installer Project, the build output of the solution will not be automatically added to the installer project, to do this you must:

• Go to the “Files and Folders' section of the Installer Project
• Press 'Add Project Output' button
• Select the “Primary Output” and “References”
• Press

The output of each project contained by the solution is automatically synchronized in the Advanced Installer project.

Following these steps, Advanced Installer Extension for Visual Studio adds in the installer project all application references except the Microsoft .NET assemblies.

3. Create the first install package

In Visual Studio select 'Build' > 'Build Solution' option to start the build.

After the build is completed successfully, it will create two main files: HelloWorld.exe which is the output from the C# project and Installer Project.msi which is the installation package.

4. Edit the installer project

Using the Advanced Installer Project viewer, you can edit basic information about your installer like Product Details, Launch Conditions, Install Parameters, and much more..

Let's suppose we have an Enterprise edition of Advanced Installer. By default, the installer project will be created based on a Freeware license. Since we want to use features from the Enterprise edition, like selecting a theme for the installation dialogs, we will need to upgrade our project type:

• Press the button to open your installer project in Advanced Installer
• From the “Project” menu select “Options...”
• Navigate to the Project Type Tab and select Enterprise
• Press the button

App Installer Windows 10

Now, that we have an Enterprise project we have full access to all the available Advanced Installer Enterprise features.

Macos App Download

• Go to Themes Page
• From the right view select the desired theme and variation for your installer dialogs
• Save the project and exit Advanced Installer

Visual Studio will ask you if you want to reload the installer project since it was modified. Press the button.

App Inventor

5. Add another Visual Studio Project to the solution

If an Advanced Installer Project is added to a solution, it will automatically import the build output and all useful information related to the projects from the solution. If later, the existing projects are modified, or another project is added to the solution the import operation must be redone.

Let's add a new Visual Studio project to the solution:

• From the “New Project” dialog in Visual Studio select 'Visual C#' > 'WPF App'
• In the “Solution” field select Add to solution option
• Press the button. The new project will be added to the solution
• Rebuild the solution

6. Create the final install package

Include the second project in the installer package:

• Select the Installer Project.aip file from the 'Solution Explorer'
• Check that both projects output builds are included in the installer package from the “Files and Folders” page
• Rebuild the solution
• Test the new installation package

The newly created installer will contain all the projects from the solution.

7. Automatically import .VDPROJ files (optional)

If you have solutions that contain old Visual Studio Deployment projects (.vdproj) you can automatically convert them to an Advanced Installer project and have it included in your solution, replacing the old VDPROJ. Just open the solution in Visual Studio, with our Advanced Installer VS extension installed, and VS will prompt you to accept the conversion from VDPROJ to AIPROJ (Advanced Installer VS project).

The new project Advanced Installer project will contain all the resources from the old VDPROJ. If you want to customize it more just use the 'Edit in Advanced Installer' button, available when you open the .aip file in Visual Studio.

8. Video tutorial