No, just put it into the iBook, make sure its all connected, then when you startup from the CD (hold the c key when booting) when you try to install the OS X it will tell you that it needs to be reformated (near the last step) and then you'll get a choice to format as HFS, and thats it. If you want to partition the disk, then before going past the "choose language menu" click the apple menu and choose "disk utility." Hope that helps.