WORKS!! ASUS has a BIOS updater application on its MoBo Installation CD. SO I went ahead and updated my BIOS and I installed an old HDD for testing since my first attempt ruined my 160Gb HDD. After copying all files over using xboxhd I attempted to 'lock' the drive again. Once again, I got the frozen message. I ctl-alt-del to restart my PC and in my BIOS is changed my Primary Master to 'Not Installed,' and continued booting xboxhd and chose option 3 to boot into Linux lock/inlock utility. Typed 'xboxhd -a' as prompted and VOILA! It was successful. I immediately removed the HDD and connected into my XBOX to test and all is good. Just finished repeating these steps with my other 160Gb and now just need to FTP files over! Thx to everyone that provides information in these forums, it has been a huge help and I hope this post might help someone else.