Hey, As of just about a half hour ago, I started getting the "No Bootable Device" when I boot up into OSX... About a month ago I had XP Pro installed via bootcamp but removed that partition using the BootCamp Assistant. I have tried holding the Option key at power up but it does nothing, it plays the classsic bootup noise, stays white for about a minute, then continues to say "No Bootable Device -- Please insert boot disc and press any key to continue". So I'm in need of assistance, please. I would NOT like to wipe my drive clean at all, as EVERYTHING is in there... and my backup is too old to even matter anymore. iTunes music (which I can't redownload, nor will I ever, too much too download, I'd probably destroy my ISP if I did.) and other such files and projects... I know it's easy to say "Sorry, bud, should have backed it up more often" -- but that's hopefully what I won't get as a reply. From the sounds of it, it seems like somehow the MBR was wiped, and the Hard drive is fine... because I just powered it off, and on, then got the message, was working fine for weeks after I deleted the BC Partition. Computer: 13" MBP w/ 2.53 C2D-4GB DDR3-250GB HDD Thanks, Liam.