How to format MacBook white

Use Disk Utility from either the original gray install discs or with a retail Snow Leopard disc.

Or using disk utility of recovery mode(booting with pressing command+r key till show up Apple logo).

You should add that the recovery feature only works if the OP is running 10.7 or later. Many macbook users are still running Snow Leopard or earlier..

Weird duplicate post......sorry.