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Date:      Sat, 21 Oct 2006 21:15:00 -0500
From:      David Kelly <dkelly@HiWAAY.net>
To:        FreeBSD Questions <questions@freebsd.org>
Subject:   non-ATA66 cable?
Message-ID:  <726CFBB1-2BB1-42A5-8A8F-96B880D316A3@HiWAAY.net>

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Dell PowerEdge 400SC, 6.2-PRERELEASE (altho this is an old issue)

dmesg says:

acd0: DMA limited to UDMA33, controller found non-ATA66 cable
acd0: DVDR <LITE-ON DVDRW SOHW-1633S/BS0K> at ata1-master UDMA33
cd0: 33.000MB/s transfers

The controller is properly probed as, "atapci0: <Intel ICH5 UDMA100  
controller>"

This DVD isn't writing discs as fast as other brands on other  
machines and OS's (such as MacOS X). Lite-On has a newer firmware  
that I have not tried. But first was checking for any sort of errors  
or irregularities and came across this mismatch.

Lite-On says "Supported transfer mode : PIO mode 4, DMA mode 2 and  
Ultra DMA mode 2", so is there something I should do to my FreeBSD to  
make this device happier?

--
David Kelly N4HHE, dkelly@HiWAAY.net
========================================================================
Whom computers would destroy, they must first drive mad.




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