Just put some gloves, protective eyewear and with a hammer, shatter the discs.
If you wanted to erase them for re-use, many will boot up DBAN after connecting the drives to a suitable computer.
I have a couple of old computers that I would like to bring to a recycling centre but they both were used to complete annual taxation forms and therefore the hard drives contain many personal information. Without actually removing the hard drive itself, is there a fairly easy and inexpensive way of permanently removing this information from the drive so that no one else can access it? I am concerned that someone will retrive this information and will be able to steal my identity and those of others. Your help will be appreaciated.
The first computer is a Mac OS 9.1 and the second is a PC running Window 2000. Would the steps be different if it was an IBM ThinkPad laptop running Window XP? Thanks to all