I see that you're trying to update to macOS Mojave from macOS Sierra, but whenever you try to download you're directed to the Purchases tab. Once there, you're not able to select Mojave to update to. I'm happy to help!
Taking a look at the screen shot of your Purchases tab, I see that you have not just macOS Mojave listed, but also macOS High Sierra, listed. This tells me that you have previously downloaded, but not installed, macOS High Seirra. That means it's possible the issue you're having is the computer doesn't know which version of macOS to update to. To solve that, we can delete the downloaded macOS High Sierra and macOS Mojave installers, then you can go back into the Mac App Store and start the Mojave update from scratch.
To delete the macOS High Sierra and macOS Mojave installers already downloaded onto your computer, open Finder > Applications and locate the installer files. The file names will include 'Install macOS High Sierra' and 'Install macOS Mojave'. Once deleted, empty your Trash: macOS Sierra: Delete files and folders, then restart your Mac: How to turn your Mac on or off - Apple Support.
Once the computer is back on, go ahead and try the installation again: How to upgrade to macOS Mojave - Apple Support.
Have a great day!
Oct 1, 2018 5:16 PM
Apple appears to have pulled the latest macOS Mojave Security Update, as well as the Safari 14 download for macOS Mojave, after users ran into a slew of problems. Apple Silicon M1 Mac mini. Cons Of Upgrading a Mac To Mojave. The following are some of the reasons not to upgrade to Mojave. Slower Mac Performance. If you have a really old Mac that you want to upgrade, it's best you hold off on doing it. Newer macOS updates including Mojave may not work that great with the old peripherals of your machine.
To get the latest features and maintain the security, stability, compatibility and performance of your Mac, it's important to keep your software up to date. Apple recommends that you always use the latest macOS that is compatible with your Mac.
Find out how to upgrade to macOS Big Sur, the latest version of macOS.
Check compatibility
If a macOS installer can't be used on your Mac, the installer will let you know. For example, it may state that your Mac doesn't have enough free storage space for the installation or that the installer is too old to be opened on this version of macOS.
If you want to check compatibility before downloading the installer, find out more about the minimum requirements for macOS Catalina, Mojave, High Sierra, Sierra, El Capitan or Yosemite. You can also check compatible operating systems on the product ID page for MacBook Pro, MacBook Air, MacBook, iMac, Mac mini or Mac Pro.
Make a backup
Before installing, it's a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Find out how to back up your Mac.
Find out how to upgrade to macOS Big Sur, the latest version of macOS.
Check compatibility
If a macOS installer can't be used on your Mac, the installer will let you know. For example, it may state that your Mac doesn't have enough free storage space for the installation or that the installer is too old to be opened on this version of macOS.
If you want to check compatibility before downloading the installer, find out more about the minimum requirements for macOS Catalina, Mojave, High Sierra, Sierra, El Capitan or Yosemite. You can also check compatible operating systems on the product ID page for MacBook Pro, MacBook Air, MacBook, iMac, Mac mini or Mac Pro.
Make a backup
Before installing, it's a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Find out how to back up your Mac.
Download macOS
Mac matte lipstick men love mystery. It takes time to download and install macOS, so make sure you're plugged into AC power and have a reliable Internet connection.
These installers from the App Store will open automatically after you've downloaded them:
- macOS Catalina 10.15 can upgrade Mojave, High Sierra, Sierra, El Capitan, Yosemite or Mavericks
- macOS Mojave 10.14 can upgrade High Sierra, Sierra, El Capitan, Yosemite, Mavericks or Mountain Lion
- macOS High Sierra 10.13 can upgrade Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion or Lion
Your web browser will download the following older installers as a disk image called InstallOS.dmg or InstallMacOSX.dmg. Open the disk image, then open the .pkg installer inside the disk image. It will install an app named Install [Version Name]. Open that app from your Applications folder to start installing the operating system.
- macOS Sierra 10.12 can upgrade El Capitan, Yosemite, Mavericks, Mountain Lion or Lion
- OS X El Capitan 10.11 can upgrade Yosemite, Mavericks, Mountain Lion, Lion or Snow Leopard
- OS X Yosemite 10.10can upgrade Mavericks, Mountain Lion, Lion or Snow Leopard
Install macOS
Mac Os Update Mojave
Follow the onscreen instructions in the installer. It may be easiest to start the installation in the evening so that it can be completed overnight, if needed.
https://northcagartwe1980.mystrikingly.com/blog/one-switch-1-9-2. If the installer asks for permission to install a helper tool, enter the administrator name and password that you use to log in to your Mac, then click Add Helper.
Please allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart, show a progress bar or show a blank screen several times as it installs both macOS and related updates to your Mac firmware. Play on mac safe.
Update Sierra To Mojave
Learn more
Mac Os Mojave
You may also be able to use macOS Recovery to reinstall the macOS you're using now, upgrade to the latest compatible macOS, or install the macOS that came with your Mac.
