Oct 07, 2019 If you have previously partitioned your Mac's hard drive in order to download a macOS beta or install Windows, but now you need that storage space back, you can remove the partition and recapture the much-needed space.Here's how. Getting rid of a secondary partition on the Mac. Starting from OS X Lion 10.7, Apple stopped shipping DVDs of its operating systems and started offering a built-in recovery partition that is created automatically for you during installation. There are, however, certain circumstances where this recovery partition is either not created during installation or damaged, removed or altered. MiniTool Partition Wizard for Mac OS X: Best alternatives Our editors hand-picked the best Mac alternatives to MiniTool Partition Wizard, go ahead and check them out, rate them, or add new ones you find fitting. Sep 13, 2016 I'm attempting to partition a 500gb external HDD to run bootcamp, but whenever I go into Disk Utility, the option to partition the drive is greyed out. I've previously erased and formatted to Mac OS X Journaled, so there's nothing on it, but still the partition option isn't available (see screenshot). Any help is majorly appreciated. Mac being a highly applicable as well as enhanced OS, furnish the users with a facility of running another operating system on the computer along with the Mac OS X. Regarding this particular purpose, Mac users are require to create a separate partition on their respective Mac hard drive via an appropriate partition scheme.
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If you have previously partitioned your Mac's hard drive in order to download a macOS beta or install Windows, but now you need that storage space back, you can remove the partition and recapture the much-needed space. Here's how.
Getting rid of a secondary partition on the Mac is a two-step process. After erasing a partition, you can then remove it from your system.
Before you start
The most important thing to do before making any changes to your hard drive is to back it up. Time Machine has the easiest way to back up your data if you don't already have a system in place.
How to erase a partition on your Mac
Make sure to restart your computer in your main partition to erase additional ones.
- Open Finder from your dock.
- Select Applications.
- Scroll down and open the Utilities folder.
- Double-click to open Disk Utility.
- Select the partition you wish to erase.
- Click Erase.
- Click Erase to confirm you wish to erase the partition.
- Click Done to continue.
How to remove a partition on your Mac
After following the steps to erase a partition, you can then remove it from your hard drive.
- Select your main partition, which is the first drive on the list. It might be called 'Fusion' or 'Macintosh HD.'
- Click Partition.
- Select the partition you wish to remove from the graph.
- Click the minus (-) button.
- Click Apply.
Disk Utility will check the disk and make changes. This will take several minutes.
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Any questions?
Do you have any questions about how to erase and remove a partition on your Mac? Let us know in the comments and we'll help you out.
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Disk Utility is an excellent app integrated into Mac OS X for managing our drives. We can use it to format a drive to a different file system, and resize, create, or delete partitions. Let's see how to make the most of Disk Utility and take control of our drives.
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We have prepared this guide on OS X 10.11.1 El Capitan. It should work on recent earlier and later versions of Mac OS X. It will also work for the Mac OS X Virtual Machine on Windows or Linux.
Table of Contents
- How to resize and create partitions on Mac OS X with Disk Utility
How to access Disk Utility on Mac OS X
The fastest way to access the Mac OS X partitioning app is to press Command ⌘ + Space to open the Spotlight Search and begin typing 'Disk Utility' - the autocomplete will kick in after 'Disk', so we won't have to enter the whole thing.
Also, if we connect an unformatted drive to our Mac, the system will automatically prompt to initialize the disk. Clicking the 'Initialize..' button will open Disk Utility.
How to resize and create partitions on Mac OS X with Disk Utility
By default, Disk Utility will open with the Mac OS X system partition selected, showing a breakdown of its usage.
As you can notice, most of the app's options are grayed out. To resize the partition and create a new partition - to use with Time Machine or to install an alternative operating system - we need to select the parent drive.
Source: support.apple.com Is Your Mac Compatible with OS X El Capitan?To check if OS X El Capitan is compatible with your Mac model, see the list of builds and versions of OS X. El capitan os x features. If you’re using an older Mac model unable to upgrade to macOS High Sierra, it is still possible to download Mac OS X El Capitan from Apple servers.
Run First Aid first
Partitioning is relatively safe, but it always carries the risk that something could go wrong, and we could lose our data.
To reduce the risk, it's a good idea to check the disk for errors. On Mac OS X, we can do that by running First Aid the drive or partition.
On a normal drive, it will take just a couple of seconds, and offer some peace of mind.
Resize a partition and create new partitions
With the drive selected, we click the Partition button to change the disk's partitions.
Clicking on the '+' will halve the capacity of the currently selected partition and create a new partition of equal size.
Using the slider on the partition pie, we can shrink or enlarge the new partition.
There are a few different file systems to format the new partition. The default is OS X Extended (Journaled).
A journaling file system will keep track of file and directory changes that aren't yet committed to the primary file system, by recording them in a data structure called 'journal'. This way, in the case of a system crash or power failure, the changes won't be lost.
The Case-sensitive option will differentiate between files or directories with the same name written with different case letters, such as 'file' and 'File'. This is the default setting for the most popular Linux file systems.
The encrypted options will encrypt and password-protect the contents of the partition. Make sure not to forget the password, because it will be next to impossible to recover the data.
MS-DOS (FAT) is the most compatible option. Any PC, operating system, and other devices (Smart TV, car stereo, etc.) can access FAT partitions. However, FAT has a file size limit of 4GB - 1 byte per file; it can't handle larger files.
ExFAT is the latest version of FAT, which has a theoretical file size limit of 16 Exbibytes = 260 bytes. Windows 7, 8.1, and 10 will recognize ExFAT but it won't work on Windows XP without Windows update KB955704, or on Windows Vista without SP2.
Disk Utility doesn't have an NTFS option. We will need an alternative app to format a partition as NTFS.
Apply the changes
Until we click on 'Apply', nothing will change on the hard drive. We can cancel anytime, and it will be like we never run Disk Utility.
Disk Utility applies most of the changes in real time, without the need to reboot or boot on an external environment.
After creating a new partition and if we haven't set up Time Machine yet, the system will ask us if we want to use the new partition for our Mac OS X backups. Feel free to decline.
Did you have any problems with Disk Utility?
If anything on the guide didn't work as described, and you weren't able to use Disk Utility to manage your Mac's disks and partitions, leave us a comment.
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