LG LGT28 User Manual page 97

3. The System Restore Settings screen will appear.
4. Click the Protected Hard Disk Area or Browse to select a file you want to back up and click Next.
The Protected Hard Disk Area option will be presented only if you have selected the Safe Backup when you run
the LG Smart Recovery for the first time.
If you select the Protected Hard Disk Area, the system will be restored to the initial status when you have bought it.
Using LG Smart Recovery