A non-technical friend used Acronis True Image 9.0 under winXP to back up drive C: onto a secure zone partition on drive D:. He did create the Acronis emergency boot CD. Drive C: failed some time later. It contained irreplaceable and very valuable business files. He can't afford to loose this information. He installed a new Drive C: and tried to restore the Acronis backup using the emergency CD. The Acronis restore could not find a secure zone on drive D:. After several days on the phone with Acronis tech support and not getting anywhere he brought the machine to me to see if I could help. We made an image copy of his entire drive D: so we have a copy to play with. Drive D: has two partitions on it. An NTFS partition of 11 gigs, and an "unknown" extended partition of about 100 gigs. The extended partition uses partition id 'bc'. The Acronis restore could indeed not see that partition. Using Knoppix, I could mount that partition as a vfat partition and see a bunch of TIB files in it. I changed the acronis partition id to 'c' (Fat32) and suddenly the Acronis restore software could see the partition and the TIB files in it. Where we are stuck is now the Acronis software is saying that the TIB files are not Acronis True Image files. I've tried verify archive to no avail. Same error. QUESTIONS: 1. what is the correct partition ID for the acronis secure zone partition? 2. What does True Image use to determine whether or not a file is a valid archive? A leading byte pattern? File attributes? 3. Does True Image use some kind of separate index file to determine the validity of an archive? 4. Are there any tools available akin to a file system editor that would allow you to look into the structure of these files? 5. Any other suggestions? Any pointers would be greatly appreciated.