If you want to permanently remove your hard disk data of your Mac system then try out the Wipe Mac utility it will permanently remove alll your hard drive data.
http://www.wipemac.com
6. Step by step procedure to permanently delete Mac files?
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9. It wipes out individual files or complete folders.
10. Wipes out system traces like access logs, install logs, and console logs.
11. Wipes out vacant space to enhance the efficiency of the hard drive. http://www.wipemac.com/wipe-mac-clean.php
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13. Make use of the strong wiper utility to clear your traces that are traced by Internet Explorer
14. You can also think about using some new secure web browser, for example Firefox. http://www.wipemac.com/wipe-free-space.php
15. Wipe Machttp://www.wipemac.com Various options to get secure wipe Mac Options to get secure wipe Mac are as follows: Do not erase data: Just only rewrites the headers on hard drives. Files and folders can be get back by recovery software. Zero out data- Usually secure for business and commercial use. 7- Pass erase and 35- pass erase- It takes surplus time about one day. This makes entirely to regain any data. 35 pass erase: It makes almost impossible to regain access to any data off the drive. http://www.wipemac.com/secure-wipe-mac.php
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17. Just hold the c key under the start up process and then choose the desired language.
18. Then Click to open disk utility and select the hard drive to be erased.
19. Click on erased tab and then click Ok button and then start on the erasing process. http://www.wipemac.com/permanently-delete-mac-files.php
20. Wipe Machttp://www.wipemac.com System requirements for Wipe Mac tool? The system requirements for this very Wipe Mac utility are very less it requires only256 MB or maximum of RAM, Intel G4 or advance processor, Mac OS X 10.4 or latest version Operating system and about 25 MB of free space of hard disk. Software does not require any type of technical knowledge in handling its user friendly interface makes it easy to use. You can also download the trial version of the software from online.