Downloading and using different Mac OS installers is very common for troubleshooting purposes, for IT staff and admins, and for tinkerers. This article will discuss where to download and access installers for MacOS Catalina, MacOS Mojave, MacOS High Sierra, macOS Sierra, Mac OS X El Capitan, OS X Yosemite, OS X Mavericks, Mac OS X Mountain Lion, Mac OS X Lion, Mac OS X Snow Leopard, Mac OS X.
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.
- Howard Robertson can’t get a piece of software he uses to run in macOS Sierra: The guys who make the program are not recognized developers for Mac. However, I have used this app for years (it.
- The installer will be called 'Install macOS High Sierra' or something similar and will have an image of a ridge of mountains on it. As long as the installer is present in the Applications folder, you can proceed.
- Cannot delete 'Install macOS High Sierra.app', stuck in trash I often use Install Disk Creator to make bootable usb drives to reinstall macos on clients computers. I am trying to delete an installer of macOS High Sierra and it won't leave the trash, says it's in use.
- For the strongest security and latest features, find out whether you can upgrade to macOS Catalina, the latest version of the Mac operating system. If you still need macOS Sierra, use this link: Download macOS Sierra. A file named InstallOS.dmg will download to your Mac.
Learn 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 might say 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, learn about the minimum requirements for macOS Catalina, Mojave, High Sierra, Sierra, El Capitan, or Yosemite. How to remove old macos apps. 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. Learn how to back up your Mac.
Download macOS
It takes time to download and install macOS, so make sure that you're plugged into AC power and have a reliable internet connection.
These installers from the App Store open automatically after you download them:
- macOS Catalina 10.15 can upgrade Mojave, High Sierra, Sierra, El Capitan, Yosemite, Mavericks
- macOS Mojave 10.14 can upgrade High Sierra, Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion
- macOS High Sierra 10.13 can upgrade Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion, Lion
Your web browser downloads the following older installers as a disk image named InstallOS.dmg or InstallMacOSX.dmg. Open the disk image, then open the .pkg installer inside the disk image. It installs an app named Install [Version Name]. Open that app from your Applications folder to begin 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
![Macos sierra installer app Macos sierra installer app](/uploads/1/3/4/1/134186059/839071434.jpg)
Follow the onscreen instructions in the installer. It might be easiest to begin installation in the evening so that it can complete overnight, if needed.
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. https://oebrzkk.weebly.com/blog/install-sikuli-ideapp-on-mac.
Learn more
You might also be able to use 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.
Want to uninstall iTunes on your Mac but find it is not easy to finish? Read this post to learn steps to uninstall and reinstall iTunes on Mac (macOS Sierra included).
iTunes Tips & Issues
iTunes Basic Learning
iTunes Music Tips
iTunes Libary Tips
iTunes Connection Issues
Other iTunes Data Issues
Uninstalling iTunes on Mac requires some skill and tricky. On a Windows PC, you can easily uninstall iTunes from Start menu > Control Panel > Uninstall a program.
However, iTunes is a default application of Mac OS and when you try to drag the iTunes application file to the Trash, a warning message will pop up and say “iTunes” can’t be modified or deleted because it’s required by OS. Don’t be upset. Here in the following, we will show you how to delete iTunes from Mac, and also share you the way to reinstall iTunes. Keep on.
Part 1. How to Uninstall and Reinstall iTunes on Mac (macOS Sierra)
Step 1. Go to the Applications folder and find the iTunes app.
Step 2. Right-click on iTunes and select Get Info.
Step 3. Locate and click on the padlock icon at the bottom right of the window, and you need to enter your admin password.
Step 4. Click and expand the Sharing & Permissions section. Change the privileges for “everyone” to Read & Write. This will give you complete control of the iTunes application so you can uninstall iTunes from your Mac.
Step 5. Close the Get Info window and drag the iTunes application to the Trash. You can still put back iTunes if you haven’t emptied the Trash.
How to Uninstall iTunes on Mac
Step 6. To reinstall iTunes, just go to App Store or download from the Apple website.
Part 2. An iTunes Alternative Tool to Manage iOS Files on Mac
If you feel disappointed about iTunes and want to manage your iOS files on Mac in a more flexible way, try an iTunes alternative tool – AnyTrans. It is a 100% safe yet professional iOS File Manager works on PC and Mac, allowing you to export, import as well as backup files on iPhone, iPad, iPod, like music, ringtones, videos, photos, contacts, messages, and other up to 31 file types.
Also, it allows you to manage your iTunes library and iCloud backups, viewing backup details and transferring certain items to computer or device. With AnyTrans, you can also transfer files from iPhone to iTunes/Mac/PC, and even to another iOS device. More than anything, unlike iTunes, it will not erase any existing data on your device while syncing. Now, download AnyTrans to have a try.
iTunes Alternative Tool to Manage iOS Files on Mac – AnyTrans
Part 3. An iTunes Alternative Tool to Restore Backup
If you choose to uninstall or reinstall iTunes just for restoring backup, then you may have another better choice. PhoneRescue – iOS Data Recovery can easily get back all your lost files from iTunes backup, like photos, videos, messages, contacts, notes, voice memos, etc. even it’s damaged or encrypted. To ensure maximum recovery rate, it offers you 3 recovery modes: Recover from iOS Device (without backup), Recover from iTunes Backup, Recover from iCloud Backup.
Also, it allows you to preview and selectively recover the files. That’s to say, you can retrieve the files you needed most, but not a blind full restore. The primary one is that it will not wipe any previous data on your device while restoring from iTunes/iCloud backup. Give it a try to restore your backup now.
iTunes Alternative Tool to Restore Backup – PhoneRescue
The Bottom Line
That’s all for how to uninstall and reinstall iTunes on Mac, hope this guide can bring you convenience. If you feel this article is helpful, you can share it with your friends.
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