Hi All Newbie here. I've just purchased a Iomega 250GB USB external drive for my music. Problem is, my imac won't boot up when the drive is connected! I have to turn the damn thing off first. Any ideas why this happens? Is therea work around? Also, is it possible to boot from this? I've tried but with no avail. Thanks in advance. btw, it's an Intel iMac Core Duo 17".