Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!rochester!pt.cs.cmu.edu!andrew.cmu.edu!pgc+ From: pgc+@andrew.cmu.edu (Paul G. Crumley) Newsgroups: comp.sys.ibm.pc.rt Subject: Re: AOS/BSD floppy problem Message-ID: Date: 30 May 89 17:38:21 GMT References: <10863@orstcs.CS.ORST.EDU> Organization: Information Technology Center, Carnegie Mellon, Pittsburgh, PA Lines: 25 In-Reply-To: <10863@orstcs.CS.ORST.EDU> 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