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Path: sserve!newshost.anu.edu.au!munnari.oz.au!news.Hawaii.Edu!ames!agate!spool.mu.edu!darwin.sura.net!udel!newsserv.cs.sunysb.edu!stark.UUCP!cs.sunysb.edu!newsserv!stark!gene From: newsserv!stark!gene@cs.sunysb.edu (Gene Stark) Newsgroups: comp.os.386bsd.bugs Subject: Re: dd from floppy causes vm fault in FreeBSD-1.0-GAMMA Date: 17 Sep 93 17:29:34 Organization: Gene Stark's home system Lines: 35 Distribution: world Message-ID: <NEWSSERV!STARK!GENE.93Sep17172934@stark.uucp> References: <2C992C39.17182@news.service.uci.edu> <wilko.748257951@spoetnix.idca.tds.philips.nl> Reply-To: stark2cs.sunsyb.edu NNTP-Posting-Host: stark.uucp In-reply-to: wilko@idca.tds.philips.nl's message of 17 Sep 93 09:25:51 GMT In article <wilko.748257951@spoetnix.idca.tds.philips.nl> wilko@idca.tds.philips.nl (Wilko Bulte) writes: bob@beamlab writes: >Is there a problem with the floppy drivers >in FreeBSD? Trying to copy a DOS diskette >using: >dd if=/dev/fd1a of=./whatever >with a disk in the drive got me a most >amusing response. >and reported a failure, then stuck tight. Just tried it, both on rfd0a and fd0a and no problem here (also on a 1542B). Only awkward thing is that dd reports "no space left on device" when it read past the end of the floppy disk. I just wanted to contribute my $0.02. After installing FreeBSD and building a kernel with my local configuration, I got a panic: trap when trying to newfs a floppy. The kernel was close to the maximum size, and the "bootstrap overlaps bss: kernel must bzero" message was printed on bootup. Rebuilding a smaller kernel gave no problems. Conclusion: There is still a problem with the zeroing of the bss area for kernels near the limit. This was discussed a few months ago w.r.t 386bsd 0.1.2.4. I have to say I haven't had a chance to go hunting for the bug, but everyone should beware of kernels close to the limit. This might be the problem you are experiencing. - Gene Stark -- stark@cs.sunysb.edu