Acer TravelMate P245-MG - Manual (Page 28)

Acer ProShield 10
English
Data Removal
Here you can select files to be completely removed from the hard disk.
The File Shredder overwrites the data to make recovering the data
impossible.
Warning: Make sure you select only the information you want to
shred. Once you have shredded a file or folder, it is impossible to
recover the data.