A few of you may know that one of my first postings to Usenet (alt.folklore.computers) was a request for a copy of Ohio Scientific's OS-65U 6502 operating system. I have been looking for it since 1993. Well, Santa came to me a little early today in the form of the UPS man and I have here in my hand (well, sitting on the desk next to me) a factory original set of 8 inch floppies of OS-65U! Level 1 version 1.44 CD-23 revision. I also have demo disks, and level 1 v 1.2 CD-7 revision. I think to myself, "My quest is over." Now the real work begins. I own six 8 inch floppy drives that came with OSI machines. None of them have had a disk in them since I have owned them (I haven't had one to put in them until now!). three are: Siemens FDD 200-8P one is: Shugart Model 801 the other two are in a box, I'll have to check later. One of the Siemens has the gold face plate I mentioned in another post. The Siemens look like double sided drives, the Shugart is definitely a single sided drive. Nothing on the disks indicate single or double sided. I think they are soft sectored (only one index hole). How should I proceed? Could I get full repair and calibration instructions for these drives? Does anybody have an 8 inch set up that can read and duplicate most formats? Maybe recover questionable/compromised data on the disks? Thanks, Bill Sudbrink