Date: Mon, 15 Aug 2005 21:49:20 -0700 From: Kent Stewart <kstewart@owt.com> To: freebsd-questions@freebsd.org Cc: Mark Kane <mark@mkproductions.org> Subject: Re: How to Force UDMA100 Mode on Boot? Message-ID: <200508152149.20702.kstewart@owt.com> In-Reply-To: <430151A6.2090405@mac.com> References: <430128F1.9@mkproductions.org> <430151A6.2090405@mac.com>
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On Monday 15 August 2005 07:38 pm, Chuck Swiger wrote: > Howdy-- > > Mark Kane wrote: > [ ... ] > > > I know about atacontrol to set it manually, but I'd like to set > > UDMA100 mode automatically on boot since I have 5 hard drives. I > > also know the sysctl hw.ata.ata_dma, but that doesn't say anything > > about using 100 vs 133. > > Your BIOS ought to have a setting which throttles this down. > > 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 There used to be a Maxtor utility that would set the maximum ATA rate on Maxtor ATA drives. I had one of those motherboard with a broken Southbridge and that was the easy way out until I replaced the motherboard with a good one. If you aren't using Maxtor's, you can look for a utility to do what the Maxtor utility did. Kent -- Kent Stewart Richland, WA http://users.owt.com/kstewart/index.html
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