Hi all! This is my first post and my first experience with Acronis. I am presently using Acronis to restore a Red Hat image to a number of hard drives. All are successful but one. This drive is a Western Digital 20-GB, new out of the box. Acronis images the drive successfully but, when booting from this particular drive I get the error; “Operating System Not Found” All the other Drives boot up just fine. I ran the WD diagnostic from there web site and passed with flying colors. I cleaned the drive and imaged it again, successfully, and again got “Operating System Not Found”. What do you all think the problem could be? Thanks in advance. Lance.