The right way to resize disk partition in macOS

Apple made it simpler to resize partitions–logical divisions of a disk drive into separate mountable volumes with completely different properties–a number of releases of macOS in the past. A Macworld reader resized their predominant quantity to 369GB to arrange a Boot Camp partition, however then realized it was too small. They puzzled the way to repair this.

In the appropriate circumstance, you possibly can merely comply with these steps with out having to again up your entire drive, erase and reformat it, and add new partitions.

Always again up your drive earlier than trying to resize partitions in case one thing goes incorrect, otherwise you by chance click on to proceed on a harmful operation.

1. Launch Disk Utility.
2. Select the disk, not the amount, within the left-hand lists of disks.
3. Click the Partitions button.
4. You can now delete different partitions (choose and click on the – button), and sort within the new dimension of your predominant partition in its Size subject.
5. Warning! Click Apply to proceed, and Disk Utility will warn you whether or not it will likely be a harmful operation, deleting the partition’s information and re-creating, or not. If it’s non-destructive, proceed.

I haven’t discovered an entire consistency wherein drives have non-destructive resizable partitions or not. You can learn numerous element about macOS drive partitioning, and nonetheless discover {that a} quantity that meets all of the parameters for resizing with out erasing, and nonetheless be advised by Disk Utility that the partition can be erased.

Foundry

If it is advisable to erase to repartition, it is best to make a full clone of the drive, then boot from macOS Recovery and use Disk Utility in that mode to repartition, which can maintain macOS Recovery intact if it’s a startup quantity. You can then additionally restore your partition from a clone utilizing Disk Utility as nicely.

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