Can you still install macOS Lion?

OS X 10.7 (Lion) is no longer available for purchase from the Mac App Store. If you have an earlier version of Mac OS X and your computer meets the system requirements for OS X 10.10 (Yosemite), you can upgrade directly to that version instead; see ARCHIVED: How do I install or upgrade OS X 10.10 (Yosemite)?

Table of Contents

How do I reinstall Lion on my Mac?

It may take a few minutes to boot into recovery mode. Select “Reinstall Mac OS X ” from the Mac OS X Utilities dialog followed by the “Continue” button. Select the drive or volume you want to reinstall Lion on and follow the onscreen instructions to complete the installation.

How do I do a clean install of an old Mac?

Here are the steps Apple describes:

Start up your Mac pressing Shift- Option/Alt-Command-R.
Once you see the macOS Utilities screen choose the Reinstall macOS option.
Click Continue and follow the on-screen instructions.
Select your startup disk and click Install.
Your Mac will restart once the installation is complete.

How do I undo a Mac update?

This is one of the easiest ways to downgrade your Mac:

Restart your Mac, while holding down the ‘Shift+Option+Command+R’ keys.
Once you see the macOS Utilities screen, select ‘Reinstall macOS’ and then click ‘Continue. ‘
Choose your startup disk, and then select ‘Install. ‘

How do I reinstall OS?

To reinstall your Windows OS on your new computer, create a recovery disc that the computer can use to boot up the new, blank drive after it’s installed. You can create one by visiting the Windows website for your particular operating system version and downloading it to a CD-ROM or USB device.

How do I do a clean install of macOS Big Sur?

Macintosh HD – Data in Catalina/Big Sur is where your data is stored separately to the macOS installation.

Either click on the – button or go to the menu and choose Edit > Delete APFS volume.
You will see a message warning you that this will permanently erase your data. Click on Delete.
Wait while the volume is deleted.

Can you revert back to old macOS?

Assuming your Mac originally came with an older version of macOS installed on it, downgrading is fairly easy. You can use the built-in macOS Recovery tool to downgrade. Just make sure you have internet access during the installation, as the software will download a previous version of macOS.

How do I Format a macOS?

Hold down the Command and R keys as soon as you hear the Mac tone indicating a reboot. Wait for the macOS Utilities screen to appear, then click Disk Utility. Choose your Mac’s system drive, usually named Macintosh HD, then click Erase. Select the Format option Mac Extended (Journaled) or APFS.

How do I reset my Mac Big Sur to factory settings?

Factory reset MacBook running macOS Monterey

Make a fresh backup of your Mac.
Open System Preferences.
Click System Preferences in the menu bar > Erase All Contents and Settings.
Follow the prompts to fully erase your Mac.
Like iOS, the new erase process in macOS Monterey handles everything to fully wipe your Mac.

How do I erase all contents of my Mac Big Sur?

How to Erase All Content and Settings in macOS

Launch System Preferences.
Click System Preferences in the menu bar and select Erase All Content and Settings.
Enter your admin password when prompted.
Click Continue to confirm that all items will be erased.
Enter your Apple ID and password if prompted to sign out.

How do I get an older version of OSX?

Use Safari to download macOS on your Mac Safari uses these links to find the old installers in the App Store. After you download the installer from the App Store, the installer opens automatically. Safari downloads the following older installers as a disk image named InstallOS. dmg or InstallMacOSX.

How do I undo a Mac update without time machine?

Using a disk. Undo Mac app updates using a disk. To begin, do the following: drag and drop the application into the disk and eject it. Update the application, if you prefer the old version, plug the disk back into your computer and drag and drop the old app version into the Applications folder.

Can you undo an update on Mac?

The simplest way to reverse an OS update is to restore from an earlier Time Machine backup – one you made before upgrading to Monterey (or Big Sur, or Catalina if you want to go back further).

How do I do a clean install of Mac Big Sur?

How do I erase all content and settings on Mac Big Sur?

If you haven’t upgraded already, it’s easiest to factory reset a Mac that’s running Monterey.

Make a fresh backup of your Mac.
Open System Preferences.
Click System Preferences in the menu bar > Erase All Contents and Settings.
Follow the prompts to fully erase your Mac.

How do I wipe and factory reset my Mac?

Is El Capitan still available for download?

Whether or not you’ve downloaded it in the past, you can now download OS X El Capitan 10.11.

How do I downgrade from High Sierra to Lion?

Since you currently have High Sierra on there you can boot up using SHIFT-OPTION-⌘-R and this should get you into the OS X Utilities menu where if you select Reinstall OS X it should show you that it’s offering to install 10.8 Mountain Lion specifically.

How do I perform a clean install of a Mac OS X?

With the Lion installer, there are two methods of performing a clean install. One method requires you to create a bootable Lion install DVD, and the second lets you perform a clean install using the Lion installer you downloaded from the Mac App Store.

How do I install lion on a Mac?

After you download the installer, copy it to any Mac that meets the minimum hardware requirements and install Lion. The Lion installer downloads to your Applications folder, and it is just under 4 GB in size.

Why upgrade to mountain lion from clean install?

Why in an upgrading to Mountain Lion, background desktop dones’t changed, as clean install, in clean install background changed to a new Mountain lion galaxy There is an incredible difference with a Clean Install to speed and stopping the spinning beach ball that arrives after about 2 to 3 years on a Mac.

How do I register for OS X Lion on Mac?

When the installation of OS X Lion is complete, your Mac displays a Welcome window, which marks the start of the registration and setup process for Lion. The OS X Lion Setup Assistant walks you through the various steps you need to set up an admin account and register. It includes tutorials as well.