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Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!msunews!uwm.edu!news.alpha.net!news.mathworks.com!udel!gatech!newsxfer.itd.umich.edu!caen!usenet.coe.montana.edu!bsd.coe.montana.edu!nate From: nate@bsd.coe.montana.edu (Nate Williams) Newsgroups: comp.os.386bsd.questions Subject: Re: SCSI & IDE h/drive at the same time (FreeBSD 1.1.5.1) Date: 20 Dec 1994 18:34:03 GMT Organization: Montana State University, Bozeman Montana Lines: 31 Message-ID: <3d782r$h89@pdq.coe.montana.edu> References: <3buhjl$pcc@ucthpx.uct.ac.za> <3c0442$546@pdq.coe.montana.edu> <3c1vcb$dk6@newstand.syr.edu> <3ct26d$2rs@wiggum.bc.tisc.titan.com> NNTP-Posting-Host: bsd.coe.montana.edu In article <3ct26d$2rs@wiggum.bc.tisc.titan.com>, Steve Schossow <ss@tisc.com> wrote: >I have a silly question. I'm running FreeBSD 1.1.5.1 on a couple >of 405 Mbyte IDE drives (my DNS, e-mail, print server and Samba >server) and wanted to run INN. No problem, except disk space. > >So I grab a 2 Gig SCSI off of my HP-710, borrow a known good Adaptec >1542B and using all default jumper settings, install it. > >I re-config-ed my kernal, disklabeled and newfs-ed but when I tar-ed >/usr onto it I started seeing various error messages (like lost >interrupts on wd0/wd1 and possibly something about DMA for the >Adaptec) then panic and reboot. > >My question is: I know FreeBSD 1.1.5.1 will run from IDE *or* >SCSI but will it run *both* at the same time? Or should I look >for IRQ conflicts/DMA conflicts/hardware problems? Sure, no problem. I suspect your problem is due to wait states. Since IDE disks don't do much via DMA, if your memory is a bit slow it won't be noticed. However, a bus-mastering controller running under 1.1.5 now uses/abuses your memory much hardware than ever before, so you may need to add a wait state to your memory. Nate -- nate@bsd.coe.montana.edu | FreeBSD dude and all around tech. nate@cs.montana.edu | weenie. work #: (406) 994-5980 | Unemployed, looking for permanant work in home #: (406) 586-0579 | CS/EE field.