Can install hackintosh without internet connection?! During the installer running cause everytime i want to run the installer on my surface pro 4 it needs internet connection which is not available on my device becuase wifi chip is not supported any idea how to bypass that for postinstallation?! Maybe also try Hotspotting your iPhone via USB to give the computer internet during install? I just performed a Catalina install without internet however. Difference was I needed to have the full 8GB installer and not the standard 500MB recovery image. Make sure the USB has the full, large, multi-gigabyte installer! Honestone33 said: Well, I just tried that software update command on my 'Catalina' system (that is also where I am entering this), and here is what I got: 'softwareupdate -fetch-full-installer -full-installer-version 10.15.1. Downloading and installing 10.15.1 installer. Install failed with error: Update not found'. So i have an iMac with an internal 5400rpm IDE drive, formatted MacOS Journaled extended, which has Mojave 10.14 and i tried to install Catalina last night and got the message that the drive is not APFS so i can't install. From what i've read, Mojave should already be APFS but there are some circumstances where you can end up with Mojave.

Summary: This page is about how to reinstall macOS in macOS Recovery mode. Based on if you want to keep the original data on the startup disk, you can either choose to clean reinstall macOS or to reinstall macOS without data loss.

Reinstalling macOS gives your Mac a fresh start especially when you are frequently bothered by some issues, such as Mac not turning on, Mac hanging on the beach ball, apps frozen on your Mac, slow performance, or pink screen on Mac. Most of the time, such issue results from some system-level problems, while reinstalling macOS can easily save your life.

• How to reinstall macOS on an M1 Mac?

How to reinstall macOS from macOS Recovery mode?

When you need to reinstall macOS on your Mac, macOS Recovery mode makes this process easy and quick. By the way, if you want to learn more about macOS Recovery mode, you can watch this video.

To reinstall macOS in macOS Recovery mode:

Step 1: Make sure your Mac is connected to a stable Internet within all the following steps.

Step 2: Identify it's an Intel or M1 Mac, and immediately do one of the followings.

• Press and hold Command + Option + R.This allows you to reinstall the latest version of macOS that is compatible with your Mac computer from the internet.
• Press and hold Shift + Command + Option + R. This option allows you to reinstall the macOS that came with your Mac, or the closest version still available.
• Press and hold Command + R. This allows you to reinstall the version of macOS stored on your built-in recovery disk, including any updates that you installed.

• How to Boot into & Use M1 Mac Recovery Mode

Step 3: Release these keys when you see an Apple logo, spinning globe, or the Utilities window.

Step 4: Enter the requested password if you are prompted to enter a firmware password or the administrator's login password.

• Recover/reset your forgotten Mac password

• Mac won't accept correct password, what to do?

Step 5: Decide if you want to clean install the system, or just reinstall macOS without losing your original data.

If you want to factory reset the Mac for selling or giveaway, or the startup disk becomes corrupted, you might want to erase the startup disk before reinstallation. This guarantees a fresh and clean installation as it wipes all your personal data on the disk.

• How to factory reset your Mac?

• How to reset your M1 Mac to factory settings?

If you only want to reinstall macOS because the original operating system is not working as you expect, you might want to keep your personal data intact. In case files are deleted or lost by accident during macOS reinstallation, you should have a backup of your data or getting files off first.

• How to get files off a MacBook that won't turn on?

Step 6: Either after erasing the startup disk or getting files off the Mac, you can then go back to macOS Utilities and choose Reinstall macOS. Check this post to find all macOS versions and know which one you are going to reinstall.

Step 7: Follow the on-screen instructions and choose a disk to reinstall the OS.

• If the internal startup disk is not showing up, or the installer says that it can't install macOS on your computer or volume, you might need to back up files and then erase your disk.
• If the installer asks you to choose Macintosh HD or Macintosh HD - Data when installing macOS Catalina, choose Macintosh HD.

Other ways to install macOS

Apart from reinstalling macOS from macOS Recovery mode, you have other options according to your situations.

1. Get released macOS versions or updates by App Store or Software Update preferences.
2. Get macOS beta (such as macOS Monterey that might be buggy now) through Apple’s developer website.

Whatever your situation of reinstalling macOS is, you should always retrieve your data from the Mac before any further movement. After all, you can't tell if you want it back or not in the future.

macOS 10.15, also known as macOS Catalina, is Mac’s most recent—next-generation—operating system. Apple’s macOS Catalina comes with more to offer compared to its predecessors. A few of this operating system’s features include experience-dedicated apps for podcasts, TV, and music. The best part about this OS is that upgrading is easy and free for all Mac users.

Before getting started, you first have to check if your Mac meets Catalina’s hardware requirements so you can proceed to install it. Here is a list of Mac devices and models compatible with macOS Catalina:

• MacBook 2015 and later
• MacBook Air 2012 or later
• MacBook Pro 2012 or later
• Mac Mini 2012 or later
• iMac 2012 or later
• iMac Pro 2017 or later
• Mac Pro 2013 or later

You can follow these steps to find out the kind of Mac you have:

1. Navigate to the Apple menu.
2. Select About This Mac.
3. The Overview tab will display your Mac from the Overview tab.

Important Information About macOS Catalina

In macOS Catalina, Apple no longer supports any 32-bit apps. Therefore, any apps on your Mac that have not been updated from 32-bit to 64-bit will not function on this OS.

To identify the 32-bit apps on your Mac, follow these steps:

1. On your screen’s top left corner, click on the Apple icon.
2. Select About This Mac.
3. At the bottom of the window, click on the button labeled System Report.
4. On the window’s left side, click on Applications (under the Software section).
5. A list of applications will populate.
6. To find the 64-bitcolumn,move to the right using your cursor. Any 32-bit apps will have No listed in this column.

Before you can upgrade to macOS Catalina, there a few things you have to sort out first, such as:

• Confirmation of your Mac’s compatibility for macOS Catalina.
• Creation of a Time Machine backup.
• Ensuring your Mac has sufficient storage to download, install, and upgrade to macOS Catalina.

Creating a Time Machine Backup

Before upgrading to macOS Catalina, it is crucial to create a Time Machine backup. The reason for the backup is a safety measure for when you find your Mac to be incompatible with the Catalina OS, which means you can erase the upgrade and restore it using the backup you created.

Creating a backup whether upgrading or downgrading your Mac is not only a good idea, but also imperative. Unless you would not mind losing everything, we highly recommend creating a Time Machine backup before upgrading to macOS Catalina. Without the backup, it would take a lot of time to restore your system to its previous OS. You would have to download each program, plug-in, and driver once more.

Follow these steps to format an external hard drive for macOS:

1. Start Disk Utility, which you can find by navigating to Applications > Utilities > Disk Utility.
2. Choose the hard drive device and then click on Erase (if initiated, the process is irreversible)
3. Choose a name for your drive (e.g., My Backup) and select the format: Mac OS Extended (Journaled), then click on Erase.

Follow these steps to create a Time Machine backup drive:

1. Start Time Machine and click on Select Disk.
2. Connect a drive (reformatted or empty).
3. Select the drive you have just connected (e.g., My Backup) and click on Use Disk.
4. Click on the Backup taskbar icon and then select Backup Now.

Downloading macOS Catalina

The upgrade to the macOS Catalina process involves two steps: backup and installation. After you have created a backup, the next step is visiting the App Store to download the macOS installer. Depending on your internet speed, the download may take some time. Upon completing the download, you can install the macOS Catalina app that you can find in your Applications folder.

Storage Space Required for the Download

macOS Catalina needs storage of 12.5GB to 18GB for upgrading. Therefore, if you have insufficient space on your Mac, you can make a backup of some files then delete them from your system to avail the storage required.

Install Catalina Without Internet

Upgrading from Mac OS X Older Versions

Any older versions of Mac OS X 10.7-10.10 have to first upgrade to Mac OS X El Capitan 10.11 version before upgrading to macOS Catalina, which you can download from Apple’s Catalina download page.

To do this, follow these steps:

1. Launch the System Preferences menu, and thenselect Software Update.
2. Click on the Download or Upgrade Now button to begin the download of the Catalina installer.

Installing macOS Catalina

Follow these steps to install macOS Catalina:

1. After completion of the macOS Catalina installation app download, the installer will automatically launch itself. If not, go to your Mac’s Applications folder and double click the Install macOS Catalina app.
2. Follow the instructions that appear on-screen to finish the upgrade and start using the OS.
3. Select an external drive to create an external drive for macOS or an internal drive to upgrade the Mac when prompted.

macOS Catalina’s New Features

Install Catalina No Internet

Follow these steps to complete installing macOS Catalina’s new features:

Install Catalina Without Internet Connection

1. After macOS Catalina installs, your Mac will restart.
2. After it has started, click on the Apple icon and select About This Mac to view the Catalina OS version.