Mac
macOS version 10.11 or later
1. Open the Finder and go to Applications | Utilities | Disk Utility.
2. In the sidebar to the left, select your LaCie Rugged RAiD Pro drive.
3. Select Erase.
4. A dialog box opens. Enter a name for the drive. This will be the name displayed when the drive mounts
5. For Format, select OS X Extended (Journaled).
6. For Scheme, select GUID Partition Map.
7. Click Erase.
8. Disk Utility will format the drive. When it’s finished, click Done.
macOS version 10.10
1. Open the Finder and go to Applications | Utilities | Disk Utility.
2. In the sidebar to the left, select the LaCie Rugged RAID Pro drive that shows the capacity.
3. In the Disk Utility window, select the Partition tab.
4. Under Partition Layout, select 1 partition.
5. Enter a name for the drive. This will be the name displayed when the drive mounts.
6. For Format, select OS X Extended (Journaled).
7. Click on Options. Select GUID Partition Map, and then click OK.
8. Click Apply.
9. A dialog appears advising you that this is a data destructive process and any data currently on the drive
will be deleted.
10. Select Partition to complete the formatting process.
Formatting erases everything on the storage device. LaCie highly recommends that you back up
all data on your storage device before performing the steps below. LaCie is not responsible for
any data lost due to formatting, partitioning or using a LaCie storage device.
macOS 10.13 and later—Make sure to select the disk and not just the volume. If
you don’t see two entries listed in the sidebar, change the view in disk utility to
show both the drive and the volume. The view button is in the upper left side
of the Disk Utility window. Change the view to Show All Devices. This feature
was introduced in macOS 10.13 and is not available in 10.11 or 10.12.
