Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!gem.mps.ohio-state.edu!tut.cis.ohio-state.edu!pt.cs.cmu.edu!b.gp.cs.cmu.edu!Ralf.Brown@B.GP.CS.CMU.EDU From: Ralf.Brown@B.GP.CS.CMU.EDU Newsgroups: comp.sys.ibm.pc Subject: Re: Corrupted BACKUP disks running MS-DOS 3.3 Message-ID: <253d56fe@ralf> Date: 19 Oct 89 05:09:18 GMT Sender: ralf@b.gp.cs.cmu.edu Organization: Carnegie Mellon University School of Computer Science Lines: 19 In-Reply-To: <2576@dogie.macc.wisc.edu> In article <2576@dogie.macc.wisc.edu>, michaelb@vms.macc.wisc.edu (Michael Bloxham) wrote: >>Has anyone else noticed this problem? Is this a bug in BACKUP.COM, >>or do I have system problems? > >I have heard from my contacts at Zenith that there may be either a bug or >virus in ZENITH DOS 3.3+ RESTORE.COM. This was sent to me via a email Having the byte that is supposed to be 0Ah turn up as 0Dh 0Ah indicates to me that the programmer forgot to make the "C" program write to the file in binary mode (the above is precisely the NL -> CRLF translation MSDOS "C" libraries perform in text mode). -- UUCP: {ucbvax,harvard}!cs.cmu.edu!ralf -=-=-=-=- Voice: (412) 268-3053 (school) ARPA: ralf@cs.cmu.edu BIT: ralf%cs.cmu.edu@CMUCCVMA FIDO: Ralf Brown 1:129/46 FAX: available on request Disclaimer? I claimed something? "How to Prove It" by Dana Angluin 1. proof by example: The author gives only the case n=2 and suggests that it contains most of the ideas of the general proof