Check compatibility
You can upgrade to OS Yosemite on any of the following Mac models. Your Mac also needs at least 2GB of memory and 8GB of available storage space.
MacBook introduced in 2009 or later, plus MacBook (13-inch, Aluminum, Late 2008)
MacBook Air introduced in late 2008 or later
MacBook Pro introduced in mid 2007 or later
Mac mini introduced in early 2009 or later
iMac introduced in mid 2007 or later
Mac Pro introduced in early 2008 or later
Xserve models introduced in early 2009
To find your Mac model, memory, storage space, and macOS version, choose About This Mac from the Apple menu . If your Mac isn't compatible with OS X Yosemite, the installer will let you know.
Make a backup
Before installing any upgrade, 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.
The AVI file format is heavily used on PCs, but can't be used on a Mac computer. Even as for Apple's QuickTime media player, unfortunately, the free version of QuickTime is not compatible with all types of AVI video files on Mac. If you want the freedom to play AVI files on Mac, you must enable the Mac's OS X operating system so it can recognize AVI video files. To be able to watch AVI on Mac, here are some methods for your reference. Method 1: Convert AVI to QuickTime compatible formats.
Get connected
It takes time to download and install OS X, so make sure that you have a reliable Internet connection. If you're using a Mac notebook computer, plug it into AC power.
Download OS X Yosemite
For the strongest security and latest features, find out whether you can upgrade to macOS Catalina, the latest version of macOS.
If you still need OS X Yosemite, use this link: Download OS X Yosemite. A file named InstallMacOSX.dmg will download to your Mac.
Install the macOS installer
Double-click the downloaded file to open a window showing its contents. Then double-click the file within, named InstallMacOSX.pkg.
Follow the onscreen instructions, which will guide you through the steps necessary to install.
Begin installation
After installation of the installer is complete, open the Applications folder on your Mac, then double-click the file named Install OS X Yosemite.
Click Continue and follow the onscreen instructions. You might find it easiest to begin installation in the evening so that it can complete overnight, if needed.
Allow installation to complete
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 OS X and related updates to your Mac firmware.
Learn more
- OS X Yosemite won't install on top of a later version of macOS, but you can erase your disk first or install on another disk.
- You can use macOS Recovery to reinstall macOS.
This tutorial guide is mainly discussing the following topics:
Part 1: Introduction of Mac OS
Mac OS is the operating system that runs on Apple Macintosh series computers, which is also a graphical user interface. The newest version is Mac OS v10.12 Sierra for now. The Mac OS family has a large members until now. The Mac OS is the prefix for its members. Then Apple company changed Mac OS to OS X in order to show the merge between Mac and iOS.
The OS X family member has Mac OS El Capitan(Version 10.11), Yosemite (Version 10.10), Mavericks(Version 10.9) and Mountain Lion(Version 10.8). And the Mac OS family member has “Cheetah”, “Puma”, Jaguar”, “Panther”, “Tiger”, “Leopard”, “Snow Leopard” , “Lion” etc.
Part 2: How to Play AVI Files on Mac Operating System
AVI, the abbreviation of Audio Video Interleaved, is the format that combines the video and audio. It is often used on multimedia disk to save videos like TV series or TV. If you need to play AVI files on Mac, you can try its default player-Quick Time. This app supports AVI file playing. However, it only supports h.264,mpeg4（MP4）,AAC, AC3 Audio, VBR MP3 of AVI files. Other than these formats, other AVI format file can not be played. In such case, you can seek help from professional app like Leawo Blu-ray Player Mac.
Part 3. Detailed Steps to Open AVI on Mac with Leawo Blu-ray Player Mac
For your information, unlike Mac OS default player-Quick Time, there is no format restriction using this splendid program. Second of all, this app supports Mac OS X 10.6 and above version for both 32 bits and 64 bits, including the newest Mac version. Last but is not least, it is 100% free for installation and usage, which is a huge advantage of this great app. Therefore, if you ever need a AVI player on Mac, check the detailed guide below.
Step 1: Download and install Leawo Blu-ray Player for Mac
You should download Leowo-ray Player for Mac from the button below to your Mac computer. Make sure that you download the right version for 32 bit or64 bit. Then install it on your computer.Be noted that the whole process is free.
Step 2: Add the AVI files for playback
Avi Player Mac Os
You should be able to spot “Open File” button on the main interface, tap it to add AVI files for playback. You could save the AVI files on desktop for easy finding or save it to the path that you like.
Step 3: Set for subtitles
Mac Os Yosemite Iso Download
You should be able to spot a subtitle selecting button on the top-left of the page easily. Just click it to find out many subtitle setting options. You can sett subtitle as your will. You can switch on or off subtitles, inspect for subtitle offset and subtitle selecting, browse for subtitle.
Step 4: Video setting
You should be able to spot video setting button on the top-left corner super easy. Click it to access the video setting panel, where you could adjust videos settings as you like. Such options are view mode, zoom amount, vertical shift, pixel ratio.
Step 5: Audio settings
You should be able to spot the audio setting button on the top-left of the screen. Click it to access to audio settings. Audio settings are like volume, audio offset, audio stream, audio output, or set as default for all videos.
Part 4. Conclusion
There are also other AVI players on the market that you can check out. For example, VLC Media Player for Mac is also can help you to open AVI on Mac. It permits you to play video for several formats. Other than that, it can also be used as a streaming media server. However, compared to Leowo Blu-ray Player for Mac, VLC Media Player for Mac often release addons, fixes that makes it more complicated. What’s more, Leowo Blu-ray Player is money-free and region-free for you to play videos with any format on Mac, which makes Leowo Blu-ray Player the best choice to open AVI on Mac. In case you haven’t noticed, this wonderful program is also capable of playing file like DVD, ISO files, audio files. With all these impressive advantages, you sure don’t want to miss it.