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As expected, Apple has started shipping new Macs with macOS 10.15 Catalina. We’re still hesitant to recommend upgrading to Catalina, particularly if you use Mail, since reports of email data loss continue. Luckily, downgrading a new Mac from Catalina to 10.14 Mojave is possible for models other than the 16-inch MacBook Pro and the 2019 Mac Pro. Mac scripting expert (and author of the new book Moving to zsh) Armin Briegel has published a guide explaining how to roll back a new Mac that ships with Catalina to Mojave. Unfortunately, the process to install Mojave isn’t straightforward, requiring a Mojave Installer USB drive. It’s particularly fussy if your Mac is equipped with a T2 security chip since you have to set up an account before you can use Security Utility to enable booting from external drives. Regardless, you will have to erase the internal drive entirely before you can install Mojave due to Catalina’s bifurcated drive structure.

Even though Apple hides High Sierra from the Mojave Mac App Store, you can still access the High Sierra download page via this direct link. Depending on your browser, you may need to click “allow” or “open” to have the link open in the Mac App Store. This should take you to the macOS High Sierra page in the Mac App Store. Now I wanted to open the App Store to download the installer again, but here it says only 'Open' and no longer 'Download'. If you click on Open nothing happens, because he can't find the file 'Install MacOS Mojave.app '.

Do you find macOS Mojave a bit too much and therefore want to downgrade? Is your Mac a bit slow or are you having problems with your apps? Or are you having some issues with your current macOS? Reinstalling macOS is often the last resort for fixing software issues on Mac.

This article will show the step-by-step process of how to clean install macOS on your Mac. Whether you need to download and clean install High Sierra, Sierra, El Capitan, Yosemite, or an earlier version of OS X, this guide got you covered. We’ll start by showing you how to clean install macOS Mojave, the latest version of macOS, before moving on the more complicated business of installing an earlier version of macOS or OS X.

Recently purchased a new retina MacBook Air 2018 but the App Store would only install updates. If I searched for an app or Safari extension, clicking Get Install shows download icon endlessly spinning. The App Store would not download Apps or Safari extensions. Here's how to fix it. Sign out of App Store. Close the App Store. Everyone knows that MacOS is available free on the app store you can download it from your app store. Moreover, in this post, we also take about the new features of macOS Mojave. For instance, the dark screen which is very attractive everyone wants to use it. At the very beginning, it was fine. But download got interrupted by whatever reason and downloaded size went deducted by around 2gb. After that, after fully downloaded, it just doesn't work. I uninstalled and redownloaded, but every time I redownload I get the 17-something mb file and it doesn't.

What You Will Need

To reinstall macOS, you need a removable flash drive with at least 15GB of free storage to make a bootable USB on Mac. This is where you’ll save the installer file for your preferred version of macOS. Make sure that there is no important data on the drive because we’re going to erase it for this purpose.

Another thing you need to take care of before reinstalling your macOS is your backup. In case something goes wrong, at least you saved your important data. When backing up your files, clean out your junk first by using an app such as Tweakbit MacRepair. It deletes all the unnecessary files so you don’t have to carry them over to your freshly installed macOS.

To create a backup of your data using Time Machine, follow these steps:

• Connect an external hard disk to your Mac using a USB cable, FireWire or Thunderbolt cable.
• Click the Apple icon located in the top left corner of your screen.
• Choose System Preferences > Time Machine.
• Turn on Time Machine by moving the slider to On.
• Click Select Backup Disk and choose the external drive you want to use for your backup.
• The external drive will be formatted, and the backup process will start in a few minutes.

Downloading and reinstalling your macOS is a simple process, but take note that every time you make important changes to your Mac, you risk problems that may cause you to lose your data. So before you do anything else, make sure your data is secured. It’s better to be safe than sorry.

Once you have your USB drive and backup taken care of, then you’re ready to clean install your new macOS.

Step 1: Format the USB drive.

Macos Mojave Download App Store

You need to re-download the installer file for your chosen macOS and save it on your USB flash drive. So the first thing you need to do is format the drive as a Mac OS Extended (Journaled) volume with a GUID Partition Table. Make sure there are no important files or data on the drive because everything will be erased.

To format your drive, follow these steps:

• Head to Applications > Utilities > Disk Utility.
• Choose your USB drive and click Erase.
• Rename your USB Drive to Untitled.
• Choose Mac OS Extended (Journaled) as the format type. For Macs running High Sierra or Mojave, choose APFS from the options.
• Select GUID Partition Map under the Scheme options.
• Click Erase. This may take a couple of minutes, depending on how big your flash storage is.
• Click Done.

Step 2: Re-download your chosen macOS installer file.

If you’re re-installing Mojave, all you need to do is search for it at the Mac App Store. Just click Download or Get, depending on the Mac App Store version you are using. If you get a warning message saying that this version of macOS is already installed on your computer and asking whether you want to continue, just hit Continue. Type in your Apple ID and password to proceed. The installer is a big file, so downloading it might take some time. macOS Mojave, for instance, is around 5.7GB.

Once the installer file has finished downloading, it will automatically launch. We don’t want it to run yet, so hit Command + Q to quit the installer.

Getting the installer file for older versions of macOS requires more work because Apple doesn’t offer downloads of old macOS versions on the Mac App Store, even if you search for them.

If you’re running macOS Mojave, you won’t be able to find older versions of macOS on your App Store no matter what you do. You need to find a computer running an older version of macOS and download the installer file from there. You can find the older macOS and OS X versions under the Purchased tab of the Mac App Store. You’ll be able to download these versions of macOS and OS X from here:

• OS X El Capitan
• OS X Yosemite
• OS X Mavericks
• OS X Mountain Lion
• OS X Lion

You’ll notice that Sierra and High Sierra are not included in this list, and that’s because Apple removed Sierra from the Purchased list when it introduced High Sierra in 2017. Fortunately, you can still download Sierra from this link as long as you’re using a non-Mojave Mac.

Download Macos Mojave Installer

If you want to download High Sierra, you’ll have to download it from another computer that’s running an older version of macOS and copy it from there.

Step 3: Create a bootable USB on Mac.

The next step is to create a bootable USB disk that you will use to install a fresh copy of your macOS. You need to install macOS from USB, so you need to create a bootable drive, using the Terminal.

Cannot Download Macos Mojave From App Store

To make a bootable macOS install drive, follow these instructions:

• Launch Terminal by pressing Command + Space and typing Terminal in Spotlight. Or you can go to Finder > Go > Utilities > Terminal.
• Connect the formatted USB drive to your computer. Make sure the name of the drive is ‘Untitled’ for this to work. Rename the drive if necessary.
• Copy and paste this command into the Terminal:

sudo /Applications/Install macOS Mojave.app/Contents/Resources/createinstallmedia –volume /Volumes/Untitled — /Applications/Install macOS Mojave.app

• Hit Return.
• Type in your password.
• This process can take a while, so be patient. When you see the word Done, this means that the bootable drive has been created.

Step 4: Install macOS from USB.

Now that your installer is ready, it’s time to install a fresh copy of your chosen macOS, using your installer drive. Follow these steps to reinstall macOS from your USB drive:

Connect your bootable drive to your Mac, then turn on your Mac or restart while holding down the Alt or Option button. This will open up the Startup Manager.

Choose to install your macOS from the external drive.

Click Disk Utility, choose your Mac’s hard drive, then hit Erase.

Go back to Startup Manager and click Install macOS.

This process will install your chosen macOS on your computer. Take note that all apps and data will be deleted from your Mac, so make sure that you have a backup of your files. The installation might take some time, so just wait.

Once the installation is finished, you can restore your apps, files and settings from your backup. Or if you want everything to be as good as new, download your apps again manually. This is recommended if you were having issues with your apps in your previous macOS.