Between old folders and documents, images and videos, apps taking up space, hundreds of email attachment downloads and local iOS backups, many people find they have at least 62GB of junk they simply don't need.
How to Format or Partition an External Hard Drive for Mac
Boot Camp is especially useful if you want to run Windows on your Mac. With Boot Camp comes Boot Camp Assistant, a handy app for partitioning your hard drive space so that one disk drive can run and operate macOS, and the other, Windows.
Following the on-screen instructions of this Mac app, you can partition your hard drive or SSD space to ensure that Windows will run smoothly on your Mac, almost as if it was operating on a native Windows PC or other device. Disk Utility is another Mac application that will repair and, as needed, partition disk drive spaces. As a Mac partition manager, it is a useful app that sits within your Utilities folder, inside your Applications folder. Another useful tool that gives you an instantly bootable copy of the drive you are going to partition, working on the assumption that if anything goes wrong during this process, you are going to lose everything that is on that hard drive.
So with a backup, nothing can go wrong, and if it does, you can easily fix it. But don't worry if you want to make changes down the road. Everything you have done is reversible, so you can change the size or repartition hard drive on Mac. Once the partition is done which doesn't take as long as you might imagine you will have a completely new hard drive or internal SSD, identical to your original, except without anything in it.
Upload anything you need, or use the cloned version to store everything that was in the original hard drive - which still exists - in this partitioned version. Within Disk Utility, you have the option of increasing or decreasing the size, erasing altogether just remember to backup anything you need first , which will restore the space lost in the partition to your primary hard drive.
Always backup before making any changes to a partition.
Add a partition to a device formatted as Mac OS Extended, MS-DOS (FAT), or ExFAT
Click the Apply button. A dialog like the one in Figure 7 appears.
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It confirms that you want to add a partition and resize the existing one. Wait while the disk is verified and the changes are made. A progress bar like the one in Figure 8 appears while Disk Utility works. Figure 8 A progress bar at the bottom of the Disk Utility window appears as the partition changes are made. Figure 9 The Disk Utility window shows both partitions under the disk. Simply select it in the Volume Scheme list Figure 9 and click the — button under the list.
You can then resize the remaining volume to take up the lost space. When you click Apply and confirm the change, the partition you deleted is removed -- along with all the data on it.
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This can save a lot of time and effort when you need to repartition your hard disk. She blogs at MariaLanger. See All Related Store Items.
How to Add a New Hard Drive Partition in Mac OS X
All rights reserved. Publishers of technology books, eBooks, and videos for creative people. There are, of course, some rules that Disk Utility uses when adding a new volume to an existing partition, but overall, the process is simple and works well. While it is possible to do, it is not a good idea to create an extremely small partition.
There is no hard and fast rule for a minimum partition size. Just think of how the partition will appear within Disk Utility.
Use a Single External Hard Drive for Time Machine Backups and File Storage
In some cases, the partition can be so small that the adjustment dividers are difficult, or nearly impossible to manipulate. In addition to adding volumes, Disk Utility can also delete existing volumes. When you delete an existing volume, its associated data will be lost, but space the volume occupied will be freed up. You can use this new free space to increase the size of the next volume up. The upshot of deleting a volume in order to make room to expand another is that their location in the partition map is important.
The opposite, however, is not true. Deleting vol1 will not allow vol2 to be expanded to fill the space vol1 use to occupy. Disk Utility will make the changes to the hard drive. Once the volume is removed, you can expand the volume immediately above it by simply dragging its resize corner. Disk Utility uses the partitioning information you supply to create volumes your Mac can access and use. When the partitioning process is complete, your new volumes should be mounted on the desktop, ready to use.
Before you close Disk Utility, you may want to take a moment to add it to the Dock , to make it easier to access the next time you want to use it. Share Pin Email. Tom Nelson has written hundreds of articles, tutorials, and reviews for Other World Computing and About.
He is the president of Coyote Moon, Inc. The difference between hard drives, partitions, and volumes. How to resize, add, or delete volumes. A Mac with OS X