On Fri, 14 Aug 1998 16:56:27 +0200 (CEST), colan said: cl>Someone posted saying that there in fact was a 2.11 which I've not cl>been able to find reference to. By any chance was that what came cl>with a PCjr? PCDOS 2.1 was released specifically for the PCjr. 2.1's floppy drive access was slowed down considerably because the drive in the PCjr was so flimsy that it would break if it was used faster. MSDOS 2.11 was the generic version available from Microsoft, and there also were versions 2.2 and 2.25 with specific international support added. "In march 1984, a year after the PC-XT introduction, IBM released DOS version 2.1 to excise these software errors [that were in verson 2.0] and to handle a hardware error it produced, called the PCjr." Try to find "DOS Power Tools" by Paul Somerson, ISBN 0-553-34526-5, Bantam computer books, from which is the above quote. It has very detailed explanations of the workings of DOS, a great many tips and tricks, a disk with 200 PC Magazine machine code utilities, and a long chapter on the development of DOS, from 1.0 to 3.3, which was the latest version when the book was printed. Kees -- Kees Stravers - Geldrop, The Netherlands - pb0aia at amsat dot org Sysadmin and DEC PDP/VAX preservationist - http://vaxarchive.ml.org Net-Tamer V 1.08.1 - Registered