I've been working away at my ImageDisk utility, and have made a number of fixes, including some corrections to the sides/stepping detect logic which failed to properly detect some mixed density disks. I have added several new features, including improvements to the "Align/Test" function, and the ability to translate the data rates (This lets you do things like recreate DD disks read on DD drives on HD drives and vice-versa). This evening I finally wired up a cable to connect a double-sided 8" drive to my PC, and was very pleased to see that I was able to backup and restore several mixed density 8" disks with no problems - even a double backup and restore (backup of backup then restore) still matched the original and booted correctly. I have also created a first cut at my "Analyze/Merge" utility, this is a companion utility which: - Provides a detailed report of the track/sector layout and data formats occuring in the diskette image. - Can perform a logical sector by sector compare of two disk images, even if the binary layout is not exactly the same (usually due to different comment or problems detecting interleave). - Can merge two images into one, allowing you to take advantage of the fact that some PC's may read different sectors than others (one of my machines refuses to read the first sector on Cromemco disks while a second machine fails to read the last sector) - and create a complete image by merging them. It's late and I'm going to bed - in the morning, I will transmit the updated software to the people who already requested and received the first version (If you don't want to receive any more updates, please let me know). If anyone else wants to join in the fun, please drop me a line and I'll add you to my list. Regards, Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html