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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!news.mel.connect.com.au!news.mel.aone.net.au!grumpy.fl.net.au!news.webspan.net!newsfeeds.sol.net!newspump.sol.net!howland.erols.net!newsxfer3.itd.umich.edu!news.bbnplanet.com!su-news-hub1.bbnplanet.com!news1.digital.com!pa.dec.com!decuac.dec.com!haven.umd.edu!hecate.umd.edu!avalon.eng.umd.edu!spaceman From: spaceman@Glue.umd.edu (Richard Patrick Thomasson) Newsgroups: comp.unix.bsd.netbsd.misc Subject: DMA timeouts: swap problem?? Date: 19 Jan 1997 03:24:57 GMT Organization: University of Maryland, College Park Lines: 22 Message-ID: <5bs469$21r@hecate.umd.edu> NNTP-Posting-Host: avalon.eng.umd.edu X-Newsreader: TIN [version 1.2 PL2] Xref: euryale.cc.adfa.oz.au comp.unix.bsd.netbsd.misc:5199 I recently installed a fresh system on a "new" disk. I am running NetBSD 1.2 on a sun3, and everything is working fine, except that once in a while I get a "DMA timeout while polling" on the SCSI bus, which crashes the machine. I know that the problem isn't machine-specific; I've tried other motherboards and the problem still happens once in a while. It almost always crashes when I boot from the miniroot. Note that this only happens when the "new" disk is the root disk. When I boot from my original hard disk, I can mount the "new" disk and work with files on it without problems. The only difference in the disks (despite the model) is that the newer disk has a swap partition; the old one was too small to have one, and since I have 24M of RAM it wasn't really necessary for what I am doing. Can anyone tell me why I am getting this error? Is it just some incompatibility with the disk I am using? Could it be related to swapping? Thanks. Patrick