Welcome to the iOS Genius Channel - How to obtain original OSX Installers older than what you have from Apple than from a Torrent Site. SUBSCRIBE FOR MORE. Make sure you are ready to downgrade your operating system by checking in with what version of OS X you already have and ensuring you have enough hard drive room to download the older version. Clicking the apple in the top left corner of your desktop and selecting About This Mac will allow you to see what OS X version you are currently running. If the version you are trying to download is older than the Mac you are attempting to download it to - the Store will not allow the download. looking for workarounds to this part - edits welcome - I can't test this as the newest Mac I have is a 2012 Mac Pro Potential workarounds, need testing - How to re-download Lion from Mountain Lion. If you need to install an older version of macOS or Mac OS X on your Mac, want to run more than one version of macOS, or want to downgrade from the macOS you have installed, it is possible. The first release of the new OS — Mac OS X Server 1.0 — used a modified version of the Mac OS GUI, but all client versions starting with Mac OS X Developer Preview 3 used a new theme known as Aqua. Aqua was a substantial departure from the Mac OS 9 interface, which had evolved with little change from that of the original Macintosh operating. Non-profit organization serving the online community by providing old versions of various programs. Global Nav Open Menu Global Nav Close Menu; Apple; Shopping Bag +.
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Developed for macOS
See more information about Outbyte and uninstall instructions. Please review EULA and Privacy Policy Outbyte.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.
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.
Download Apple Os
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.
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.
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. /adobe-creative-suite-6-download-mac.html. 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.
Apple Old Versions Of Mac Os
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.
See more information about Outbyte and uninstall instructions. Please review EULA and Privacy Policy Outbyte.
If you are on a Windows computer, see Install an older version of Adobe Reader Windows.
Installing Adobe Reader is a two-step process. First you download the installation package, and then you install Adobe Reader from that package file.
Before you install, make sure that your system meets the minimum system requirements.
Note:
If you're running Mac OS X 10.9 or later, install the latest version of Reader. For step-by-step instructions, see Install Adobe Acrobat Reader DC on Mac OS.
Select your operating system, a language, and the version of Reader that you want to install. Then click Download now.
When asked whether to open or save the .dmg file, select Save File, and then click OK.
Important: If you do not see this dialog box, another window could be blocking it. Try moving any other windows out of the way.
Double-click the .dmg file. If you don't see the Downloads window, choose Tools > Downloads.
If the download package doesn't appear in the Downloads window and a Thank You screen remains visible, click the download link on the Thank You screen.
Double-click the Adobe Reader [version] Installer.pkg to start the installation.
If a dialog box appears telling you to quit Reader, close Reader, and then click OK.
When the Install Adobe Reader dialog box appears, click Continue. Follow the onscreen instructions to install Reader.
Note:
If you're running Mac OS X 10.9 or later, install the latest version of Reader. For step-by-step instructions, see Install Adobe Acrobat Reader DC on Mac OS.
Select your operating system, a language, and the version of Reader that you want to install. Then click Download now.
If a dialog box appears telling you to quit Reader, close Reader, and then click OK.
When the Install Adobe Reader [version] dialog box appears, click Continue. Follow the onscreen instructions to install Reader.
When the Install Succeeded window appears, click Close.
To see if other users are experiencing similar download and installation problems, visit the Acrobat Reader forum, or the Deployment & Installation forum on AcrobatUsers.com. Try posting your problem on the forums for interactive troubleshooting. When posting on forums, include your operating system and product version number.