Make sureyou have a current backupof all data on the drive you plan to modify.

Here’s how to enlarge a volume.

Launch Disk Utility, located atApplications>Utilities.

Select the drive that contains the volume you want to enlarge.

Or, key in “Disk Utility” into Spotlight Search to bring up the system quickly.

Disk Utility displays a two-pane interface.

choose the drive that contains the volume you want to enlarge.

Select Partition from Disk Utility’s toolbar.

SelectPartitionfrom Disk Utility’s toolbar.

You’ll see a pie chart of all the volumes contained on the selected drive.

You’ll see what free space is available and how much space each volume occupies.

Select Partition again to confirm.

To make one volume bigger, you’ll need to delete another.

opt for volume you want to delete by clicking once within its pie slice.

The selected pie slice turns blue, and the name of the volume is displayed in the Partition field.

You’ll see a pie chart of all the volumes contained on the selected drive.

(In this example, we’re selecting and deleting the volumeMore Stuff.)

Tap the minus icon at the bottom of the pie chart to delete the selected volume.

The partitioning pie chart shows you the expected outcome of your action.

Select the volume you want to delete by clicking once within its pie slice.

SelectApplyto continue orCancelto stop these changes from being made.

If you applied the changes, the freed-up space is added to your remaining volume.

Instead, pick the small pie slice and use the Size field.

Launch Disk Utility and select the drive that contains both the Stuff and More Stuff volumes.

For example, you have two volumes on your selected drive, Stuff and More Stuff.

LaunchDisk Utilityand go for the drive that contains both theStuffandMore Stuffvolumes.

Select theMore Stuffvolume from the pie chart.

Select Partition from Disk Utility’s toolbar.

In this example, we’ll reduce More Stuff to 45 GB.

Next toSize, enter 45 GB and then pressEnterorReturn.

The pie chart shows the anticipated results of this change.

Select the More Stuff volume from the pie chart.

SelectApplyto commit to the new partitioning.

In the next section, we’ll add the freed up space to Stuff.

Moving Data Using Disk Utility

Now we’ll add the newly freed-up space to “Stuff.”

Next to Size, enter 45 GB and then press Enter or Return.

grab the untitled volume you just created, and then selectRestore.

Next toRestore From, selectMore Stuff, and then selectRestore.

The restore process may take a few minutes.

Select Apply to commit to the new partitioning.

When it’s finished, selectDone.

Finishing the Resizing

Now, we’ll complete the volume resizing process.

grab the drive that contains the volumes you’ve been working with, and then selectPartition.

Select Partition to confirm.

The More Stuff data is restored to the remaining volume.

SelectApplyto finish the process.

ClickApplyto finish the process.

Select the untitled volume you just created, and then select Restore.

So, while resizing volumes is still possible, it has become a multi-step process.

Next to Restore From, select More Stuff, and then select Restore.

The restore process may take a few minutes. When it’s finished, select Done.

Select the drive that contains the volumes you’ve been working with, and then select Partition.

Select the volume and then click the minus sign to remove it

Select Apply to finish the process.