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I have a 1tb hard drive. Long a go I split it it into two partitions. Sign up or log in Sign up using Google. Sign up using Facebook. He is the president of Coyote Moon, Inc. Updated November 11, The difference between hard drives, partitions, and volumes. How to resize, add, or delete volumes. A Mac with OS X This guide will work with OS X Do not attempt to use earlier versions of Disk Utility for this process.
Use Disk Utility to Add, Delete, and Resize Existing Volumes
One or more drives whose volumes you wish to resize, add to or delete. Volumes are most often made up of a single hard drive partition that contains a Mac file system. When you partition a hard drive, you physically create separate sections on the drive ; each of these sections is called a partition.
A partition defines a specific area of a hard drive. Data can be erased in multiple ways. The default method on the Mac deletes the data table entries for the location of the file but does not actually remove the file itself from the hard drive or volume. The practical effect of this is that your Mac no longer sees the file, and the space it uses is now marked as available free space.
How to expand Macintosh HD partition without losing data?
You can also specify optional erase options that will completely remove the data. Your Mac can use five different types of formats: Current drives and volumes will display in a list pane on the left side of the Disk Utility window.
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Volumes are listed below their associated physical drive. Select the drive associated with the volume you wish to expand. Select the volume listed immediately below the volume you wish to expand. Disk Utility will display a confirmation sheet listing the volume you are about to remove. Make sure that this is the correct volume before taking the next step.
How to Resize a Mac Volume With Disk Utility
Select the volume you wish to expand. Grab the right-hand bottom corner of the volume and drag to expand it. Disk Utility will display a confirmation sheet listing the volume you are about to resize.
Disk Utility will resize the selected partition without losing any of the data on the volume. Volumes are listed below their associated hard drive. Select the existing volume that you wish to split into two volumes. Disk Utility will dynamically display the resulting Volume Scheme, and show how the volumes will be configured once you apply the changes.
Disk Utility will display a confirmation sheet that lists how the volumes will be changed. Volumes are listed below their associated drive. Select the existing volume you wish to delete. Click the - minus or delete button.