Eric: I have a copy in PDF form. I'll upload it to my Web site tonight and you can grab it from there. http://highgate.comm.sfu.ca/~rcini/classiccmp/Altair32links.htm Let me know if it has what you're looking for. I would love a semi-reliable disk system for my IMSAI to replace the 8" drives I have. Rich -----Original Message----- From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Eric J. Rothfus Sent: Sunday, April 09, 2006 6:35 PM To: cctalk at classiccmp.org Subject: Looking for an Altair 88-DCDD Manual Scan I have a copy of the manual on its way to me, (thanks Jack!) but in the mean-time does anyone have a PDF of the Altair 88-DCDD floppy disk manual? In particular, I'm looking for the section regarding data encoding - format of the data on the disk itself. Probably some form of FM, but with hard-sectors. I've looked everywhere, but for some reason, most Altair doc sites don't have the DCDD scan. Yup, the Altair is the next target for the SVD. (http://www.theSVD.com). Eric