Lesson 21: Installing Software on Your Mac

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  • Aug 31, 2018  Part 1. Getting all the required things Part 2. Downloading the macOS Mojave Installer App Part 3. Making a bootable Mojave USB drive Part 4. Installing and Patching Mojave OS on the unsupported computer.

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When you buy a new Mac, it might be a good idea to do a clean installation; starting from scratch, with a brand-new operating system, and adding the files that you need manually. Here’s how to migrate your files to your new Mac, or do a clean installation, and the pros and cons of both methods. How to migrate files to a new Mac. For everything older than System 7, you will need a Mac Plus emulator like Mini vMac NEW! Since August 2016, it is now possible to emulate a PPC and boot Mac OS 9.2.2 using QEMU! Quick tip about Basilisk II if you do not have a real old Mac: it even reads high density Mac. Dec 26, 2017  Shut down your Mac, turn it on while holding down Command+R. Your Mac will boot into the recovery partition. If you’re using an older Mac (from 2010 or earlier), there’s a chance that you can’t use Recovery Mode. On those devices, hold “Option” while turning your computer on, then select the recovery partition instead.

Installing software on your Mac

Your computer allows you to do some really amazing things. Digital photo editing, sophisticated computer gaming, video streaming—all of these things are possible because of different types of software. Developers are always creating new software applications, which allow you to do even more with your computer.

Installing from a CD-ROM

From the mid-1990s through the late 2000s, the most common way to get new software was to purchase a CD-ROM. You could then insert the disc, and the computer would walk you through through the installation.

Now, almost all software has moved away from this model. In fact, Apple no longer sells computers that include a CD-ROM drive.

Installing software from the Web

Install New Software On Old Mac

Today, the most common way to get new software is to download it from the Internet. Applications like Microsoft Office and Adobe Photoshop can now be purchased and downloaded right to your computer. You can also install free software this way. For example, if you wanted to install the Google Chrome web browser, you could visit this page and click the Download button.

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The installation file will usually be saved to your computer in the .dmg format. Pronounced dot d-m-g, this is the standard extension for installation files on Mac computers. You can follow the steps below to install an application from a .dmg file.

  1. Locate and download a .dmg file.
  2. Locate and select the .dmg file. (It will usually be in your Downloads folder.)
  3. A dialog box will appear. Click and drag the icon to your Applications folder.
  4. The application is now installed. You can double-click the icon to open the program.
  5. On the desktop, there will probably be a disk drive icon with the name of the application. This is known as a volume, and it is not needed after the application has been installed. You can simply drag it into the Trash on the dock.

Some applications will use the .pkg extension instead of .dmg—in this case, you can simply follow the instructions to install the software.

Tips for finding software

In our experience, the easiest way to find new software is to search the Web. For example, if you were looking for a way to edit some personal photos on your computer, you could run a Google search for free photo-editing software. If you're not exactly sure what kind of software you're looking for, try describing the tasks you want to complete. For example, if you wanted a way to create to-do lists and organize your appointments, you might search for something like free calendar organizer software.

The Mac App Store

If you're using macOS, you can download and install software from the Mac App Store. The Mac App Store is meant to simplify the process of locating and installing software from third-party developers—when you find an app, you won't have to do any extra work to install it.

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Reinstall from macOS Recovery

macOS Recovery makes it easy to reinstall the Mac operating system, even if you need to erase your startup disk first. All you need is a connection to the Internet. If a wireless network is available, you can choose it from the Wi-Fi menu , which is also available in macOS Recovery.

1. Start up from macOS Recovery

To start up from macOS Recovery, turn on your Mac and immediately press and hold one of the following sets of keys on your keyboard. Release the keys when you see an Apple logo, spinning globe, or other startup screen.

Install New Software On Old Mac

Command (⌘)-R

Reinstall the latest macOS that was installed on your Mac (recommended).

Option-⌘-R

Upgrade to the latest macOS that is compatible with your Mac.

Shift-Option-⌘-R

How To Install New Software On Old Mac

Reinstall the macOS that came with your Mac, or the closest version still available.

You might be prompted to enter a password, such as a firmware password or the password of a user who is an administrator of this Mac. Enter the requested password to continue.

When you see the utilities window, you have started up from macOS Recovery.

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2. Decide whether to erase (format) your disk

You probably don't need to erase, unless you're selling, trading in, or giving away your Mac, or you have an issue that requires you to erase. If you need to erase before installing macOS, select Disk Utility from the Utilities window, then click Continue. Learn more about when and how to erase.

3. Install macOS

When you're ready to reinstall macOS, choose Reinstall macOS from the Utilities window. Then click Continue and follow the onscreen instructions. You will be asked to choose a disk on which to install.

  • If the installer asks to unlock your disk, enter the password you use to log in to your Mac.
  • If the installer doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk first.
  • If the installer is for a different version of macOS than you expected, learn about macOS Recovery exceptions.
  • If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD.

Please allow installation to complete without putting your Mac to sleep or closing its lid. During installation, your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.

If your Mac restarts to a setup assistant, but you're selling, trading in, or giving away your Mac, press Command-Q to quit the assistant without completing setup. Then click Shut Down. When the new owner starts up the Mac, they can use their own information to complete setup.

macOS Recovery exceptions

The version of macOS offered by macOS Recovery might vary in some cases:

  • If macOS Sierra 10.12.4 or later has never been installed on this Mac, Option-Command-R installs the macOS that came with your Mac, or the closest version still available. And Shift-Option-Command-R isn't available.
  • If you erased your entire disk instead of just the startup volume on that disk, macOS Recovery might offer only the macOS that came with your Mac, or the closest version still available. You can upgrade to a later version afterward.
  • If your Mac has the Apple T2 Security Chip and you never installed a macOS update, Option-Command-R installs the latest macOS that was installed on your Mac.
  • If you just had your Mac logic board replaced during a repair, macOS Recovery might offer only the latest macOS that is compatible with your Mac.

If you can't get macOS Recovery to offer the installer you want, you might be able to use one of the other ways to install macOS.

Other ways to install macOS

How To Install New Software On Old Macbook

  • You can also install macOS from the App Store or Software Update preferences. If you can't install macOS Catalina, you might be able to install an earlier macOS, such as macOS Mojave, High Sierra, Sierra, El Capitan, or Yosemite.
  • Or create a bootable installer disk, then use that disk to install macOS on your Mac or another Mac.