Apple has everything to lose. They licensed out their os to apple clone makers in the mid 90’s (when jobs was out) but quickly found themselves outdone by the clones – cheaper products that almost always outperformed apple’s products. Their sales crashed, and apple brought back jobs. The first thing he did was cut off the competition (i mean clone manufacturers) forcing all macs to be. To maintain my sanity, I have done my best to keep as many Macs as possible on the same version of the Mac OS. With few exceptions, that means System 7.5.5. (Or 7.5.3 for a few Macs that are not compatible with 7.5.5.) I find it complete and stable. At this point, I see no reason to ever change most users to Mac OS 8 or newer. On Friday, April 15th, 2005, Apple released Mac OS X 10.3.9 and Mac OS X Server 10.3.9 to Software Update, and as a series of standalone Web downloads: Mac OS X 10.3.9 Combined 117 MB Mac OS X.

• Reason (scott Mccreevey) Mac Os X
• Reason (scott Mccreevey) Mac Os Catalina

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.

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 it's too old to be opened on this version of macOS, or that your Mac doesn't have enough free storage space for the installation.

To confirm compatibility before downloading, check the minimum requirements for macOS Catalina, Mojave, High Sierra, Sierra, El Capitan, or Yosemite. You can also find compatibility information on the product-ID page for MacBook Pro, MacBook Air, MacBook, iMac, Mac mini, or Mac Pro.

Reason (scott Mccreevey) Mac Os X

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.

Safari uses these links to find the old installers in the App Store. After downloading from the App Store, the installer opens automatically.

• 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

Safari 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

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 macOS and related firmware updates.

Learn more

You might 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.

Editor’s Note: This the 10th profile in our ongoing series on the recently announced features slated for Mac OS X 10.5, the next major update to Apple’s operating system.

Apple Core technologies—Core Audio, Core Graphics, Core Image, and Core Video—give software developers a leg-up when creating multimedia applications and behaviors for OS X. Instead of starting from scratch, developers can take advantage of underlying frameworks to easily add sophisticated features to their apps that perform very efficiently. Mac OS X 10.5 brings another item to this list, known as Core Animation; Apple promises that this Core technology will make creating complex 3-D animations more accessible.

How it works

Core Animation provides a layer-based animation engine that dynamically renders different media layers—ones with text, 2-D graphics, OpenGL renderings, and video—at the same time. The scenes it helps create can have transparency effects as well as Core Image filters and effects. A developer can use from and to points, key frames, spline animations, and transitions (fade in, reveal, and push, for example) to create complex animations for UI elements including menus, sorting, reordering, zoom and pan, and mouseovers.

Core Animation also takes advantage of the multi-core chips in Intel-based Macs, meaning that while an application itself runs on one core, Core Animation processes run on their own, dedicated core.

Why it was added

Apple’s big selling point to developers is “Let Core Animation take the headache out of animation”—that’s exactly why it exists. Developers usually need to manage the movement of individual elements on a frame-by-frame basis.

During the Worldwide Developers Conference keynote, Scott Forstall, Apple’s vice president of platform experience, showed the company’s iTunes ad in which album covers fly around to create a cityscape. Forstall demonstrated the same thing made using Core Animation—it took one-tenth the lines of code as the original. What’s more, the television ad was a rendered movie, whereas Forstall’s Core Animation demonstration was a live animation that he could navigate through—a feat that requires a lot of technology and a lot of graphics and processing horsepower.

Who’s it for

Core Animation is an underlying technology, and, as such, it’s not a consumer feature—it will be used by developers. Apple, for example, is using Core Animation for the cool animated effects in both Time Machine and Spaces. At the same time, the reason Apple creates Core technologies is so developers can make applications with richer features and experiences for the user, so the ultimate beneficiaries are you and me. Users need to have a Core Image-capable Mac in order to reap the benefits of Core Animation.

What’s missing

Reason (scott Mccreevey) Mac Os Catalina

Until Core Animation is finalized and developers get a chance to put it to the test, it’s difficult to say what Apple needs to do to make it better.

What it means

Providing powerful animation tools under the hood of OS X means applications will look snazzier and perform better. The technology is there to make it easier for developers to do many things, not the least of which is to wow customers and skeptics alike with everything the latest Macs and compatible software can do.

[ Jonathan Seff is senior news editor for Macworld .]