Date: Tue, 16 Aug 2005 00:26:38 -0500 From: Mark Kane <mark@mkproductions.org> To: Chuck Swiger <cswiger@mac.com> Cc: freebsd-questions@freebsd.org Subject: Re: How to Force UDMA100 Mode on Boot? Message-ID: <4301790E.8040706@mkproductions.org> In-Reply-To: <430151A6.2090405@mac.com> References: <430128F1.9@mkproductions.org> <430151A6.2090405@mac.com>
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Chuck Swiger wrote: > Your BIOS ought to have a setting which throttles this down. From what I see in the BIOS it just says "DMA Mode" and then Enabled or Disabled. Unfortunately it doesnt look like any drive-specific options to choose which speed. > Simply changing in within FreeBSD might be a little late, since the > system has to boot far enough to get to that, or you might run some > other OS on the machine one fine day. Anyway, consider: > > touch /etc/rc.local > echo "/sbin/atacontrol mode ..." >> /etc/rc.local Everything seems fine with all the drives until I try to start to transfer data between them at 133 mode. So I think that rc entry you suggested would be perfect, since that would execute before I would start transferring any files. Thanks :) -Mark
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