There is only one OSX bootable Drive utility on the market now. It's Micromat's Drive 10. But that is all it does right now. Their Techtool pro4 software will ship soon as they told me at Macworld SF, at it will have all the Techtool pro3 features plus the Drive 10 functions and a little more. I've used disk warrior and it's companion plus optomizer with good success in the past, but this looks like a super software package. Got to have something to keep the video drives tuned up! -ps >Hi - >What would people recommend as the best software to defragment a hard-disk? >I've had Disk Warrior recommended, but as I understand it, you have to boot >in OS9 to use it, which sounds a little unelegant. >Any suggestions??? >Thanks, >Malcolm