- #Why partition disk mac how to
- #Why partition disk mac mac os
- #Why partition disk mac install
- #Why partition disk mac pro
- #Why partition disk mac software
Selecting the start-up disc from System Preferences Select Startup Disk then choose which partition you wish to boot into when you restart your Mac. If you are currently using your Mac and wish to reboot into the other partition, open up System Preferences by clicking on the Apple on the lefthand side of the menu bar. If your Mac is currently turned off, the way to choose which partition to boot into is as simple as holding down the Option key (sometimes marked ALT) immediately following the start-up chime.Īfter a few seconds, you will be given a choice of hard drives to select.
#Why partition disk mac install
It is possible to install Snow Leopard, Lion, Mountain Lion and Mavericks on my iMac that originally shipped with Snow Leopard.
#Why partition disk mac pro
For example, I am unable to install Snow Leopard and Lion on a MacBook Pro that originally shipped with Mountain Lion. Tip: It is not normally possible to install a version of OS X that precedes the release date of your Mac.
#Why partition disk mac software
It will then take a few minutes to apply the changes.ĭownload OS X Lion or Mountain Lion, from the Mac App Store, or locate your download for OS Mavericks and launch it in the normal way.ĭuring the set up screens, pay attention to the destination volume for the software installation, ensuring that you select your new partition.Įnsuring OS X is installed on the new partitionĬomplete the rest of the installation process in the normal way.
#Why partition disk mac mac os
I’d recommend that you choose something other than Macintosh HD.Įnsure that the Format box says Mac OS Extended (Journaled) then click the Apply button. The size of the partition, as you drag it, will be displayed.Īlternatively, select the partition that you wish to resize and enter the desired size in the Size box.Ĭlick the + button to create a new partition, select it and enter a name for it. You can resize the partition by clicking and dragging the bottom righthand side corner of the partition rectangle. It is most likely that you only have one (visible) partition on your hard drive. Creating the PartitionĬlick on the Partition button to reveal the Partition Layout and Partition Information for the hard drive. If you can see all of these options except for Partition, you have selected the wrong disk in the lefthand column. Across the top you should see the options First Aid, Erase, Partition, RAID and Restore. Now select your Mac’s internal hard drive to reveal more information about it. Alternatively, launch Spotlight by pressing CMD SPACE and type disk utility followed by the Return key. Open the Disk Utility application which you will find in the Utilities subfolder of the Applications folder. I recommend ensuring that you have a current back up of your data before partitioning. Partitioning the internal hard drive is a very easy procedure, but you must pay attention to ensure that you do not lose any data.
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I don’t recommend relying solely on Time Machine, so get a spare external hard drive and perform a clone using software such as Carbon Copy Cloner or SuperDuper! Tip: Do not partition your hard drive without, first, backing up your data. This short screencast describes the partitioning process, outlined in this tutorial, in just a couple of minutes. The advantage of partitioning the hard drive is that the operating system will be more responsive and you’ve not spent any money on a third-party application in order to do it. The drawbacks of virtualisation is the cost and performance. Being a Mac owner, you are spoilt for choice with VMWare Fusion, Parallels or Virtualbox. This means that I can test the features and functionality of OS X Mavericks without compromising my every day working with OS X Mountain Lion.įor many people, virtualisation is the answer and this generally works well. It runs alongside, but completely separately from, OS X Mountain Lion.
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This is especially true if your Mac is your only computer.įor example, by partitioning my Mac’s hard drive, I have been able to install OS X Mavericks as a separate installation. If, like me, you consider yourself a bit of a tech-head then being able to run multiple versions of OS X, on one Mac, has its advantages. On the face of it, one might wonder what the purpose of running multiple versions of OS X might be? For most users, without more than a passing interest, there is no reason to partition the internal drive.įor those who are interested, and for those who have a more compelling reason to, then partitioning to run multiple versions of OS X might provide advantages.
#Why partition disk mac how to
In this tutorial, I will show you how to partition and prepare your Mac’s internal hard drive such that you can boot the machine into your choice of a number of versions of OS X. And there are good reasons for doing this. Luckily, the latter has grown faster and now it is possible to run two, or more, different versions of OS X, side-by-side, on the same internal hard drive. The size of operating systems is growing, as is the size of internal storage.