When it comes to diagnosing and resolving problems with their computers, most Mac users rely on Disk Utility and the tools that come with Mac OS X. Disk Utility can resolve a number of problems—such as damaged hard drive directory structures and permissions problems with Mac OS X’s system files. SMART Utility is an application to scan the internal hardware diagnostics system of hard drives. SMART (Self-Monitoring Analysis and Reporting Technology) is a system built into hard drives. How to Clone Mac OS X to new HDD or SSD How to Clone Mac Hard Drive with Disk Utility.
In simple words, a disk partition can be defined as the Mac can be dividing into different partitions, and all the partitions have their specific space that you can use. You can also transfer the essential files and documents in one partition and lock it, and the other partition can be used for other general tasks.
If you want to manage your Mac hard drive by creating different partitions, then this article is the right place for you. It is a full guide of how to partition a hard drive on Mac. Let’s check it out.
Before Partitioning A Mac: Backup and Clean it Up First!
The very primary step before moving towards partition hard drive on Mac, you must backup and clean up the internal hard drive of Mac. First thing to do is to backup your files on Mac using Time Machine. If anything goes wrong in the partition process, you still have the backup files.
Then you need to clean up your Mac and prepare for disk partition, so if any other unwanted program that might become the reason for virus or interruption can easily remove. As for Mac cleaning, you can use the Mac cleaning tools to do that, but for effective results, use iMyFone Umate Mac Cleaner. This app is a great chioce for cleaning up your Mac before partitioning a hard drive, for it can do the cleaning task efficiently and thoroughly. The main cleaning features of it are as follow:
- Clean Up Junk: It can easily clean up to 40+ types of junk files in one go with Quick Clean & Deep Clean mode.
- Delete large files: It can quickly delete large files that over 50MB within one click.
- Delete duplicate files: It can delete the duplicate files from your Mac without any problem to reclaim more available space.
- Uninstall apps and remove extensions: It will allow you to uninstall unused apps and remove those unnecessary extensions in a flash.
The app is super easy to use that you can use it to get a cleaner Mac with simple clicks. Now, here are the steps to follow if you want to use this fantastic app for junk cleaning from your Mac.
- Download the app and launch it on your Mac.
- Then you need to choose a feature that you need, after that, click on the Scan button.
- Just preview and then select all the unneeded items to clean up, all can be done in a few minutes.
Click here to get the detailed guide to know this Mac cleaning tool better and use it completely clean up your Mac.
Here We Go! How to Partition A Hard Drive on Your Mac?
For disk partition, there are twp types: Volume and Partition. Before creating a new partition, you need to confirm your Mac's operating system. For different macOSs, there are different operations when it comes to disk partition. We will list several ways below to help you determine how you go about partitioning your Mac. Silhouettefx silhouette 7 5 80.
For macOS High Sierra & Later Versions: Create A Volume
A new word here, Volume, is a storage container that a Mac can read. It include CDs, DVDs, SSDs and hard drives. If you are running macOS High Sierra or later versions on your Mac, then you can create a new volume. The term ‘partition’ is used in those Macs running lower versions.
So, here is the question: how to create a volume on Macs that are running macOS High Sierra or later versions? These later macOSs use a new file system - Apple File System (APFS). For those Macs using the APFS, you can use Disk Utility in MacOS to create a new volume. Below are the steps to follow.
- Open Disk Utility on your Mac.
- Click the drop-down menu and choose 'Show All Devices' option. Then select the disk you want to add the new volume to and hit the '+' button to add a new volume.
- Next, name your new volume and set it up accordingly by clicking on 'Size' Option. Then fill in the 'Reserve Size' and 'Quota Size' options.
- At last, you must click on 'Add' button to confirm your request.
For macOS Sierra & Lower Versions: Create A Partition
As mantioned above, for Macs that are running lower verisons, you can partition its hard drive. There are two methods that can create a partition on Mac. One is using Disk Utility and the other is using Boot Camp. Just keep reading!
Method 1: Use Disk Utility to Partition A Hard Drive on Mac
The first way to do the disk partition on Mac is to use Disk Utility, which can repair and partition disk drive spaces from your Mac. Next, let's follow the procedure of Mac disk utility partition:
- Open Disk Utility application on your Mac.
- Next, you need to choose Mac's internal hard drive.
- Then click Partition option and click the add partition button: '+'.
- Now a new partition will show up, and you can change the size as indicated by what you need. Then give this new partition a name as you like.
- At last, you must click on 'Apply' button to confirm your request.
- You can also click on 'Revert' button to remove the partition on Mac.
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When the process is done, you will have a new hard drive with available space. Just transfer anything you want and keep them in the new partition.
Method 2: Use Boot Camp to Partition A Hard Drive on Mac
As we mentioned above, you can run different operating systems on your Mac after partitioning a hard drive. So if you want to run Windows on another drive, this way is very helpful to get it done. Boot Camp is a pre-installed application in the later version of Mac. You can launch it and follow the steps below.
- Open Application > Utilities > Boot Camp Assistant.
- Click on “Create or remove a Windows partition” option and hit “Continue” button.
- Then select a hard drive on your Mac for disk partition.
- Next, confirm the size of the partition for running Windows OS.
- At last, hit the Partition button and that is done.
Extra Tip: How to Resize or Delete Your Partition?
After talking about how to partition hard drive on Mac, we will guide you more extra tips in the next part. Let's check them out!
To Resize A Partition: Click on the 'Partition' option in Disk Utility and click the '+' or '-' button to change the size of your partition.
To Delete A Partition: Click on the 'Partition' tab in Disk Utility, then click the '-' sign and hit 'Remove' option to delete a partition.
What Are The Benefits and Risks of Partitioning A Mac?
Here are some of the benefits and risks of partitioning a hard drive on Mac that you must consider before going to do that. Let’s check them out:
Benefits of Partitioning A Mac:
1. You can run more operating system
The main benefit that the Mac partition provides to you is, it will allow you to run two operating systems smoothly. You can also use the two different versions of one OS that means you can run on the two different partitions of the same device.
2. You can manage and format hard drive separately
The disk partition on Mac os x can allow you to manage both partitions in different ways. If you want to use another volume of the mac, it will require double space so, make a wise decision and select the right option according to the available space.
3. It will give you a private space
And you can enjoy the separated space for your essential documents, and the other partition can be used for general tasking. In this way, your essential data will be safe and sound, and no one can use it. The separate partition will allow you to use the Mac without any disturbance.
Risks of Partitioning A Mac:
When you partition your hard drive on Mac, a main risk of that is data loss. Actully you can avoid this by backing up your disk before partitioning your Mac. But if you forgot to backup your disk and lost some files after partitioning, don't worry. You can use Mac Data Recovery Tool to recover all the lost data on your Mac.
Conclusion
That's all on how to partition a Mac. You can easily follow the steps we listed above to do the disk partition by yourself. And remember to clean up your Mac before making a partition, the best choice for cleaning junk file on your Mac is to use Umate Mac Cleaner. Get started now! First, clean up your Mac and then create a partition on it.
Erasing your disk: For most reasons to erase, including when reformatting a disk or selling, giving away, or trading in your Mac, you should erase your entire disk.
Erasing a volume on your disk: In other cases, such as when your disk contains multiple volumes (or partitions) and you don't want to erase them all, you can erase specific volumes on the disk.
Erasing a disk or volume permanently deletes all of its files. Before continuing, make sure that you have a backup of any files that you want to keep.
How to erase your disk
- Start up from macOS Recovery. Then select Disk Utility from the Utilities window and click Continue.
If you're not erasing the disk your Mac started up from, you don't need to start up from macOS Recovery: just open Disk Utility from the Utilities folder of your Applications folder. - Choose View > Show All Devices from the menu bar in Disk Utility. The sidebar now shows your disks (devices) and any containers and volumes within them. The disk your Mac started up from is at the top of the list. In this example, Apple SSD is the startup disk:
- Select the disk that you want to erase. Don't see your disk?
- Click Erase, then complete these items:
- Name: Type the name that you want the disk to have after you erase it.
- Format: Choose APFS or Mac OS Extended (Journaled). Disk Utility shows a compatible format by default.
- Scheme: Choose GUID Partition Map.
- Click Erase to begin erasing your disk and every container and volume within it. You might be asked to enter your Apple ID. Forgot your Apple ID?
- When done, quit Disk Utility.
- If you want your Mac to be able to start up from the disk you erased, reinstall macOS on the disk.
How to erase a volume on your disk
- Start up from macOS Recovery. Then select Disk Utility from the Utilities window and click Continue.
If you're not erasing the volume your Mac started up from, you don't need to start up from macOS Recovery: just open Disk Utility from the Utilities folder of your Applications folder. - In the sidebar of Disk Utility, select the volume that you want to erase. The volume your Mac started up from is named Macintosh HD, unless you changed its name. Don't see your volume?
- Click Erase, then complete these items:
- Name: Type the name that you want the volume to have after you erase it.
- Format: Choose APFS or Mac OS Extended (Journaled). Disk Utility shows a compatible format by default.
- If you see an Erase Volume Group button, the volume you selected is part of a volume group. In that case, you should erase the volume group. Otherwise, click Erase to erase just the selected volume. You might be asked to enter your Apple ID. Forgot your Apple ID?
- When done, quit Disk Utility.
- If you want your Mac to be able to start up from the volume you erased, reinstall macOS on that volume.
Reasons to erase
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You can erase at any time, including in circumstances such as these:
- You want to permanently erase all content from your Mac and restore it to factory settings. This is one of the final steps before selling, giving away, or trading in your Mac.
- You're changing the format of a disk, such as from a PC format (FAT, ExFAT, or NTFS) to a Mac format (APFS or Mac OS Extended).
- You received a message that your disk isn't readable by this computer.
- You're trying to resolve a disk issue that Disk Utility can't repair.
- The macOS installer doesn't see your disk or can't install on it. For example, the installer might say that your disk isn't formatted correctly, isn't using a GUID partition scheme, contains a newer version of the operating system, or can't be used to start up your computer.
- The macOS installer says that you may not install to this volume because it is part of an Apple RAID.
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About APFS and Mac OS Extended
Disk Utility in macOS High Sierra or later can erase using either the newer APFS (Apple File System) format or the older Mac OS Extended format, and it automatically chooses a compatible format for you.
How to choose between APFS and Mac OS Extended
Disk Utility tries to detect the type of storage and show the appropriate format in the Format menu. If it can't, it chooses Mac OS Extended, which works with all versions of macOS. If you want to change the format, answer these questions:
- Are you formatting the disk that came built into your Mac?
If the built-in disk came APFS-formatted, Disk Utility suggests APFS. Don't change it to Mac OS Extended. - Are you about to install macOS High Sierra or later for the first time on the disk?
If you need to erase your disk before installing High Sierra or later for the first time on that disk, choose Mac OS Extended (Journaled). During installation, the macOS installer decides whether to automatically convert to APFS—without erasing your files. - Are you preparing a Time Machine backup disk or bootable installer?
Choose Mac OS Extended (Journaled) for any disk that you plan to use as a Time Machine backup disk or as a bootable installer. - Will you be using the disk with another Mac?
If the other Mac isn't using macOS High Sierra or later, choose Mac OS Extended (Journaled). Earlier versions of macOS don't work with APFS-formatted volumes.
How to identify the format currently in use
If you want to know which format is currently in use, use any of these methods:
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- Select the volume in the Disk Utility sidebar, then check the information shown on the right. For more detail, choose File > Get Info from the Disk Utility menu bar.
- Open System Information and select Storage in the sidebar. The File System column on the right shows the format of each volume.
- Select the volume in the Finder, then choose File > Get Info from the menu bar. The Get Info window shows the Format of that volume.
If your disk or volume doesn't appear, or the erase fails
- Shut down your Mac, then unplug all nonessential devices from your Mac.
- If you're erasing an external drive, make sure that it's connected directly to your Mac using a cable that you know is good. Then turn the drive off and back on.
- If your disk or volume still doesn't appear in Disk Utility, or Disk Utility reports that the erase process failed, your disk or Mac might need service. If you need help, please contact Apple Support.
Learn more
- If you can't start up from macOS Recovery, you can use a different startup disk instead.
- If Disk Utility shows a Security Options button in the Erase window, you can click that button to choose between a faster (but less secure) erase and a slower (but more secure) erase. Some older versions of Disk Utility offer the option to zero all data instead. These secure-erase options aren't offered or needed for solid-state drives (SSDs) and flash storage.