Formatting a Seagate external hard drive for Windows 7 can be done by following these steps:
1. Connect the Seagate external hard drive to your computer with its included USB cable.
2. Open ‘Computer’ from the Start menu and locate the new drive in the list of available drives.
3. Right-click on the icon of your Seagate external hard drive and select “Format…” from the pop-up menu that appears.
4. Choose NTFS as the file system under File System, give it a name if you choose to do so, then click Start at bottom right corner of window to begin formatting process; this may take several minutes depending on size of disk. 5. When finished, click OK when prompted and safely remove it from your computer by clicking Safely Remove Hardware icon located near clock in taskbar before unplugging device or turning off power supply to prevent potential data loss or damage due to sudden disconnection or power outage during transfer/write processes