Re: Can't get HDD out of PIO into DMA
- From: "Vanguard" <vanguard.news@xxxxxxxxxxxx>
- Date: Sun, 2 Jul 2006 01:50:28 -0500
<paulmd@xxxxxxx> wrote in message news:1151817094.273420.13650@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Steve Longmire wrote:Have a Fujitsu Crusoe 867MHz with 512 MB RAM and Seagate 100GB 5400 RPM
ATA/100 HDD running XPPro SP2. Device Manager says Use DMA if Available, but
stays in PIO mode. THere are no disk errors in event log. Have tried
uninstalling Primary IDE as well as the ALi M5229 PCI Bus Master IDE
Controller. XP detects and reinstalls these after reboot, but drive stays in
PIO mode. BIOS also set to use DMA Mode 4. Have removed HDD and reinstalled
it to see if cable connection was the problem, but still in PIO mode.'
Have contacted Seagate and Fujitsu and both say it is a problem with
ATAPI.SYS from SP2. What do I do now???
Are you using 40 or 80 wire ribbon cables?
Except that the old 40-wire, 40-pin IDE cables would support up to ATA-3 (33Mbps), also called UDMA-33. It was when you wanted to get UDMA-66, or higher, that you needed to use the 80-wire, 40-pin IDE cables to reduce the cross-talk between adjacent signal wires (provided the controller and drive both supported the higher DMA rates). However, the 80-wire, 40-pin IDE cables can still be used on the slower devices, plus they up data reliability due to better signal integrity.
.
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- From: paulmd@xxxxxxx
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