fink@nucthy.physics.orst.edu (Paul fink) (05/29/89)
Ok, Your not going to believe this. I didn't!
There has been a number of problem reported concerning the floppy drive and
AOS's BSD. Well is another one.
Insert 360k floppy into drive. Do a "dosdir". Fine.
Insert another floppy into drive. Do "dosdir" and get.......
THE DIRECTORY OF THE FIRST FLOPPY!
Logout and log back in. Do dosdir. And still you get the original directory.
We tried this many times with many combinations and we always get the
directory of the first floppy that we read.
I have recommended that we reevaluate AIX and perhaps drop AOS.
____________________________________________________________________________
Paul J. Fink Jr. Internet:
Oregon State University fink@PHYSICS.ORST.EDU
Department of Physics Phone:
Corvallis, Oregon 97331 (503) 754-4631pgc+@andrew.cmu.edu (Paul G. Crumley) (05/31/89)
Paul, This problem has been reported to the AOS folks before. The easiest way around the problem is to use the device /dev/rfd0 instead of /dev/fd0 thus forcing the device to re-read or written for each access. (the problem is the way the buffers are managed for the block floppy devices) You can either have folks explicitly indicate /dev/rfd0 each time or you can patch the dos commands to use /dev/rfd0 by default (that's what we did here) or you can submit an bug report and wait. As for re-evaluating AIX, I think you have the right idea. I have been working with it for a few months porting a large system (CMU's Andrew system) and have found it to be a much more robust environment in which to do development than the AOS system on which the software was initially implemented. There are very few parts of BSD that are not available in AIX. Best of all, it's really nice to have an 800 number to call where people will respond to problems, even by sending diskettes with fixes, in 24 hours if the problem is really bad. Best Regards, Paul