Date: Fri, 15 Aug 1997 17:15:53 -0500 (EST) From: "John S. Dyson" <toor@dyson.iquest.net> To: current@freebsd.org Subject: Minor word of warning about APM with WD DMA Message-ID: <199708152215.RAA00969@dyson.iquest.net>
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Gang, This is just a heads-up, but it is a not-so-well known secret that I use IDE drives often (I am a cheap-skate.) When going to work on-site at NCI/Navio/Oracle or whatever it is called today, I usually set my machine to run in powersaving mode. Since the DMA changes (which I have enabled), my filesystems appear to be readily scrambled when APM is ON. This is just a caveat, so that others might not get hosed by the problem. Not sure what is really going on here, so I am hesitating to lay-blame on mixing DMA and APM right now, and will not get a chance to look at it myself for a while. So, beware!!! :-). John
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