Acer TravelMate P645-V - Manual (Page 29)

Acer ProShield 17
E
nglish
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.