Extending a partition on a copied hard drive using Mac OSX
ALERATEC KNOWLEDGE BASE ARTICLE
Using Mac OSX to extend an existing partition on a copied hard drive to the full size of the drive.
When duplicating from a smaller hard drive to a larger one, using an Aleratec HDD duplicator, the larger drive will always show up as the same size as the smaller source drive. The rest of the space is unused. So to use the remainder of the hard drive space the existing partition needs to be extended. In Mac OSX there is a way to extend partitions in Disk Utility. Below goes through the process on how to do it. (Note: Make sure the data on the drive you are extending the partition on is backed up prior to running this process.)
- Connect the HDD to the computer externally or internally as a second HDD. (Note: It's best not to extend partitions on drives that are being booted into, as data loss or corruption can occur.)
- Click on the Go menu and then on Utilities.
- A Finder window will come up with the Utilties folder selected (or opened depending on your view). Double-click on Disk Utility.
- The Disk Utility application will open. On the left side of the screen select the hard drive you will be working with, then click on the Partition option. (Note: Make sure to select the actual drive and not the partition.)
- On the right side where the partition and unused space is displayed click and hold on the dividing line between the 2 disk areas. Drag the dividing line to the bottom until all unused space is taken, then click on Apply.
- A prompt will come up asking you to verify the partitioning action. Click on Partition.
- Disk Utility will then go through the process of verifying and partitioning the disk.
- When finished the single partition will not take the whole drive and no free space will show.