Lenovo Y730 Y730 User Guide V1.0 - Page 151

Lenovo IdeaPad Y730 UG V1.0_en.book Page 142 Friday, June 27, 2008 6:06 PM Appendix D. Notices ƒ Using the preinstalled recovery program, bring the hard disk back to factory-ship state. These operations, however, only change the file allocation of the data; they do not delete the data itself. In other words, the data retrieval processing is disabled under an operating system such as Windows. The data is still there, even though it seems to be lost. Thus, it is sometimes possible to read the data by use of special software for data recovery. There is a risk that people of bad faith may read and misuse the critical data on hard disks for unexpected purposes. To prevent the leakage of data, it becomes very important that you take responsibility for deleting all the data from the hard disk when you dispose of, sell, or hand over your computer. You can destroy the data physically by smashing the hard disk with a hammer, or magnetically by means of strong magnetic power, thus making the data unreadable. But we recommend that you make use of the software (payware) or service (pay service) specifically developed for the purpose. 142