George.Wood%cmu-cs-a@sri-unix.UUCP (02/29/84)
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