. Erase & Install The final installation option is called Erase & Install (known to the geek community as "Nuke 'n' Pave"). As you can guess, it erases your entire hard drive and installs the ultimate clean | . Erase Install The final installation option is called Erase Install known to the geek community as Nuke n Pave . As you can guess it erases your entire hard drive and installs the ultimate clean fresh sparkling new copy of Leopard and its applications there. Use this nuke-and-pave option when you re about to sell your Mac and want to ensure that no trace of your former stuff is still there. If you re absolutely certain that you won t regret completely erasing the computer or you have a brand-new virgin hard drive follow the previously described steps 1 through 3. On the Select Destination screen though click Options and select Erase Install. Continue with step .