Date: Wed, 01 Nov 2000 13:04:07 -0600 From: nathan <beemern@telecom.ksu.edu> To: Tim McMillen <timcm@umich.edu> Cc: Arcady Genkin <antipode@thpoon.com>, freebsd-questions@FreeBSD.ORG Subject: Re: ad0: DMA problem fallback to PIO mode; HARD READ ERROR blk#25418687 Message-ID: <3A006927.D10FC9E0@telecom.ksu.edu> References: <Pine.SOL.4.10.10011011352230.16836-100000@breakout.gpcc.itd.umich.edu>
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i assume you "upgraded" fbsd recently? make sure DMA is NOT enabled in the kernel ... that MIGHT be whats happening, your kernel is tryin to use DMA through a non-dma channel (your p166 onboard ctrl) i don't know what brand of mobo you have, but, being an ex-hardware guy, i've RARELY seen onboard IDE controllers go bad.. even on OLD hardware... just a thought.. before you spend $$ unnecessarily good luck! nathan Tim McMillen wrote: > Yeah that makes it a good likelihood that it is the controller. Are there > two IDE controllers on your motherboard? Try the other one. > Or see if you can borrow a pci card controller to test the drive with. Or > just put the drive in somebody elses computer and boot with a boot floppy > to see if the drive works there. Then let us know. Luckily IDE > controllers are very cheap. So you can add another and disable the > original. > > Tim > > On 1 Nov 2000, Arcady Genkin wrote: > > > I just replaced a hard drive in one computer, because the previous one > > died last night. (It was a 3.5 years old WD, so I thought that it had > > to happen). Well, I was getting these errors with the previous > > harddrive. Now I completely reinstalled the system, and I'm getting > > same error messages with the new one. > > > > ad0: HARD READ ERROR blk# 25418671 > > ad0: DMA problem fallback to PIO mode > > ad0: HARD READ ERROR blk# 25418687 status=59 error=40 > > ad0: DMA problem fallback to PIO mode > > ad0: HARD READ ERROR blk# 25418687 status=59 error=40 > > ad0: HARD READ ERROR blk# 25418687 status=59 error=40 > > > > After these errors the box just rebooted. This looks scary. Could it > > be the controller? The box is an older P166, running 4.1.1-S. > > > > I don't quite believe in coinsidence of identical problems happening > > to successive hard drives. The new one is a very nice 13G IBM > > DeskStar 7200rpm, 2Mb cache. > > > > Any ideas? > > Many thanks, > > -- > > Arcady Genkin > > Don't read everything you believe. > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-questions" in the body of the message > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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