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 formats the drive. When it’s finished, click Done.
Windows
1. Make sure the storage device is connected to and mounted on the computer.
2. Go to Search and then type diskmgmt.msc. In the search results, double-click Disk Management.
3. From the list of storage devices in the middle of the Disk Management window, locate your LaCie
device.
4. The partition must be available to format. If it is currently formatted, right click on the partition and then
choose Delete.
5. To create a new partition, right click on the volume and select New Simple Volume. Follow the on-screen
instructions when the New Simple Volume Wizard appears.
macOS starting version 10.13—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.
