11.   It can then corrupt information on a hard disc and send more e-mails with the attachment, spreading the infection.

12.   Magnetic media like hard discs, Zip discs or backup tapes are less reliable but viable options.

13.   Too many computer users know how frustrating a hard disc crash is.

14.   With that realization, we knew that sitting in our data, literally on hard disc, would be planets in shorter periods than the theoreticians had predicted.

15.   The adaptor will be released in November along with an optional hard disc drive.

16.   The factory will manufacture hard discs for personal computers and other computer parts, the company said.

17.   Flash memories retain data even after the power source is turned off and are eventually expected to replace hard discs in some areas.

18.   It attributed the upward revision to expected strong sales of magnetic heads for hard disc drives as well as electronic equipment for cellular telephones.