Hi…I’m Serge Siou and Welcome to MacStudioA.
In this Episode we'll be demonstrating How to Dual Boot OS X Mountain Lion 10.8 and Mavericks 10.9
Let's Get Started
"What You'll need"
An Intel Based Mac System with OS X Mountain Lion 10.8 installed.
And a copy of OS X Mavericks 10.9
As always... Make sure that you have made a backup of your
hard drive, especially when working with Partitioning your hard drive using the Mac Disk Utility Program.
First thing we'll need to do is Partition a space on our Hard Drive.
So to do this, we'll need to launch the Disk Utility Program, click LaunchPad and in the
Other Folder click the Disk Utility Icon.
Once launched, click the Main Hard Drive for the Mac.
Now click the Partition Tab,
then enter a value or drag the resize control that you want the Macintosh HD to have.
Since I want 30 GB for OS X Mavericks, I find it a lot easier by just subtract the amount from the Macintosh HD.
Once done, click Apply, then the Partition Button if you are sure then Your Admin Details
to confirm. This took about 15 seconds.
Next we need to initialize or prepare the 30 Giga Bytes partition for OS X Mavericks,
to do this click on the Plus button here and choose an appropriate name instead of the
default, we'll name it appropriately as Mavericks HD.
Now click the Apply button and like before click partition and then enter your Admin
Details.
We can now close the Disk Utility window.
That takes care of the Partitioning Section.
Next, we need to Install OS X Mavericks. If you've downloaded it, it should b in the Applications Folder.
Double click the Install OS X 10.9 icon to launch the install process.
Then click continueto begin the installation.
After agreeing to the terms click the Show All Disks... Button, then navigate to the
just created Mavericks HD. Click once to select it then the Install Button to begin,
confirm by entering your Admin Details.
This completes the first stage for installing OS X Mavericks, the Mac will now reboot to
complete the second stage on the the install.
It took me approximately 24 minutes to complete the second stage, the final stage is entering
you login details for OS X Mavericks, the entire process took about 30 minutes.
I'll just time lapse the second and final stages to save time.
Once completed, the Mac will always boot in OS X Mavericks by default.
I'll show you how to change this if you wish in just moment.
Now, to reboot in OS X Mountain Lion, shut down the Mac, then Turn it back on with the
Option constantly pressed till you here the familiar Boing sound.
Click on the Macintosh HD Icon to boot OS X Mountain Lion.
As mentioned earlier, if you wanted to change the boot sequence of OS X. Simply Launch System
Preference, then click the Startup Disk icon, as you can see the default OS X Mavericks
HD is highlighted.
To make OS X Mountain Lion as the default startup disk, simply press the lock to make
changes then enter your Admin Details then the Unlock Button.
Now, as you can see, all the Disks are Highlighted, click on the Macintosh HD Icon to select this as the Default
startup Disk and then click on the Lock to confirm.
And that's all folks....All done.
Thanks for Watching
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