UsingInstall *GNOME Disks*.

Install *GNOME Disks*.

In the **Format Disk** dialog:

In the **Format Disk** dialog:

1. If you want to erasoverwrite all data securelyon the device, choose to
**Overwrite existing data with zeroes** in the
**Erase** drop-down list.
menu.

If you want to overwrite all data on the device, choose **Overwrite existing data with zeroes** in the **Erase** menu.

2. Choose **Compatible with all systems and devices (MBR/DOS)**
in the **Partitioning** drop-down list.
menu.

Choose **Compatible with all systems and devices (MBR/DOS)** in the **Partitioning** menu.