Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!watmath!clyde!floyd!harpo!seismo!hao!hplabs!sri-unix!George.Wood@cmu-cs-a From: George.Wood%cmu-cs-a@sri-unix.UUCP Newsgroups: net.micro.cpm Subject: RE: disk editor wanted for cpm/1791 Message-ID: <17004@sri-arpa.UUCP> Date: Tue, 28-Feb-84 23:50:00 EST Article-I.D.: sri-arpa.17004 Posted: Tue Feb 28 23:50:00 1984 Date-Received: Sat, 3-Mar-84 00:15:07 EST Lines: 15 Ward Christiansen's DUU (DU version 77 ?) is a good disk editor, but will not do exactly what Bob Meier wants, i.e. read a bad sector, if the sector crc is bad; This is bacause the 179x series won't do the read -- it reports the crc error instead. If the sector is damaged but contains a valid crc, or is intermitently readable DUU will read it. The only way I know of to read really bad sectors is to read the whole track and pick the sector out of the track. I don't know of any editor which will do this, although I have a little program which will read a track into a buffer and let me mess with it via ddt. Reading whole tracks is pretty hardware specific, and on some non-dma systems, can't be done because of timing problems. George