Perpixeled Mac OS

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MacBook Pro, Mac OS X (10.6.3) Posted on Jul 23, 2013 6:25 AM Reply I have this question too (140) I have this question too Me too (140) Me too. Check out my video how to install python on mac os x here - https://www.youtube.com/watch?v=H3cfBcRk5Dg. When I look in Activity Monitor in Mac OS X 10.8.3 on a Macbook Pro 15' Retina while running Chrome (Build 26.0.1410.64) in a Windows 8 Pro VM hosted in Parallels 8 (Build 8.0.18483) I see that the 'Parallels VM' process is constantly showing 40-50% CPU usage, even when the VM is idle. For well over a decade, millions of global users have used Parallels Desktop® for Mac to run Windows, Linux and other popular operating systems on Mac®—without rebooting. We recommend that curious users read this blog post thoroughly to ensure that you’re set up. On macOS you can use the Instruments application to profile your code. I like to use the 'Time Profiler' which will show you how much time your application is its various parts during execution. I haven't used perf myself, but from talks/videos that I've seen this seems to be the most common use. To use the 'Time Profiler'.

If you install macOS on an additional volume of your startup disk, you can switch between that macOS and the macOS on your other volume, as if each were on a separate disk. And because storage space is shared across APFS volumes, you don't need to reserve space for the new volume. Its size automatically adjusts to fit your content.

What you need

Your Mac must already be using macOS High Sierra or later on an APFS-formatted startup disk. Find out which format your startup disk is using.

You don't need to reserve storage space for the new volume, but macOS needs as much as 20GB of available space to install, depending on the version of macOS. If you don't have enough space, the installer will let you know.

About This Mac includes a storage overview: Choose Apple () menu > About This Mac, then click Storage.

Back up your Mac

It's a good idea to back up your Mac first, especially if you're installing a beta version of macOS. Beta software is software that is still in development, so some apps and services might not work as expected.

Add an APFS volume

Open Disk Utility, which is in the Utilities folder of your Applications folder.
In the sidebar, select your existing APFS volume.
Choose Edit > Add APFS Volume from the menu bar, or click in the Disk Utility toolbar. These options are available only when an APFS volume is selected.
Type any name for the new APFS volume, then click Add:
Disk Utility should now show the new volume in the sidebar. The new volume will also appear in the Finder, as if it were a separate disk. You can now quit Disk Utility.

Install macOS on the volume

Choose an installation method:

To install a beta (prerelease) version of macOS, enroll in the Apple Beta Software Program and follow the installation instructions on the program website.
To install a release version of macOS, you can use macOS Recovery. The keys you press at startup determine which macOS is installed.

When the installer opens and you're asked to choose where to install, click Show All Disks, then select the new volume.

Switch between macOS versions

After installation is complete, you can use Startup Disk preferences or Startup Manager to quickly switch between each macOS:

Choose Apple () menu > Startup Disk, then click and enter your administrator password. Select the volume that you want to use, then click Restart.
Or press and hold the Option key during startup. When prompted, choose the volume that you want to start up from.

Keep the macOS on each volume up to date

To find the latest updates for each version of macOS, check for software updates, then start up from the other volume and check for software updates again.

Learn more

If your Mac is using macOS Sierra or earlier, or the startup disk is formatted as Mac OS Extended instead of APFS, you can create a new partition instead. The space it occupies doesn't automatically adjust to fit your content, so you must manually size the partition. Learn how to add a volume to a device formatted as Mac OS Extended.

Every major version of ~~Mac OS X~~ macOS has come with a new default wallpaper. As you can see, I have collected them all here.

While great in their day, the early wallpapers are now quite small in the world of 5K and 6K displays.

If you want to see detailed screenshots of every release of OS X, click here.

If you are looking for Mac OS 9 wallpapers, this page is for you.

10.0 Cheetah & 10.1 Puma

The first two releases of Mac OS X shared the same wallpaper. The sweeping blue arcs and curves helped set the tone of the new Aqua interface.