All -- I?m working on a side project to another thing I?m working on and I?m trying to compare code from DOS 1.0 and 1.1. I have the PC-DOS 1.1 files (all including IBMBIO and IBMDOS) but only disk images (Teledisk) for PC-DOS 1.0. Is there an easy way to extract these files from the disk image? Does anyone have these files already extracted that they can send me? I think I can convert the TD0 image to IMD, but the IMD tools seem to work at the track level on the image and not the file level, but any help would be appreciated. Thanks! Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.altair32.com http://www.classiccmp.org/cini