Date: Thu, 24 Jul 1997 10:28:58 -0400 (EDT) From: Paul Brannan Reply-To: Paul Brannan cc: opendos AT delorie DOT com Subject: Re: floppy-copy errors In-Reply-To: <2AF28F63532@tui.lincoln.ac.nz> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Precedence: bulk > Has anyone else found errors after copying to floppy disk? I use > Novell DOS 7.0.15 and get errors in copying large files to floppy > disk. I detect the errors using COMP. Typically, there are between > 0 and 7 errors (different bytes) per file (I use three 350kB > test files). I get problems like that all the time when using PKZIP, I think it is a bug in PKZIP. > I have found that if I clean boot, then the errors disappear. > Adding other programs makes the errors recur. However, after many, > many tests I have yet to establish any logical pattern in the > results as to which setups work and which don't. The same problems > occur with DR-DOS, but *much less* frequently with MS-DOS (i.e., > only 1 file mis-copied out of 135). > > The system is an AMD K5-PR133 on an ASUS TP24 motherboard (onboard > i/o). There are absolutely no problems on my 486 system running the > same Novell DOS version. > > I have tried swapping the floppy disk drive (and cable) from my > working 486 system, but this made no difference. The remaining > possibilities are something to do with DR/NW/OpenDOS, the > motherboard, or the cpu. Any thoughts and opinions would be > appreciated. What you have described sounds like a problem a friend of mine experienced once. He bought a computer that had a very small scratch on the motherboard. He switched disk drives, cables, I/O cards, and all of the components worked fine in other systems, but not in his. The computer apparently worked great, but the floppy drive simply refused to operate properly. Try putting your diskette drive in the 486, my guess is that it will probably work fine, and that you may need to replace your motherboard. Paul Brannan brannanp AT musc DOT edu