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r2d2-860 · 08-18-2007, 07:10 PM

Hard drive is apparently operating in PIO mode w/o DMA. Have run all diagnostics I can get a hold of... All pass. HD is Seagate 60GB and passes Seagate diagnostics, Dell boot time DMA test passes, drive passes every test, memory passes, CPU passes, motherboard passes
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Machine is about 10x slower than it was 2 days ago. On first occurence, Scandisk indicated volume was dirty & some free memory was indicated as taken. Have run virus checks, registry checks, malware, etc. Nothing shows up. Have defragged with DOS level and Windows level.

Old benchmark had disk read/write at 18MB/19MB /sec. Now is 115 MB read/1.2MB write. on same benchmark.

Is it possible somehow that driver is chosing - for whatever reason - not to use DMA? If so, is there a way to get the DMA back in the loop?

08-18-2007, 07:10 PM	#1 (permalink)
r2d2-860 Registered User Join Date: Aug 2007 Posts: 4 OS: XP	Slow Hard Drive on Dell Inspiron E1505 Hard drive is apparently operating in PIO mode w/o DMA. Have run all diagnostics I can get a hold of... All pass. HD is Seagate 60GB and passes Seagate diagnostics, Dell boot time DMA test passes, drive passes every test, memory passes, CPU passes, motherboard passes . Machine is about 10x slower than it was 2 days ago. On first occurence, Scandisk indicated volume was dirty & some free memory was indicated as taken. Have run virus checks, registry checks, malware, etc. Nothing shows up. Have defragged with DOS level and Windows level. Old benchmark had disk read/write at 18MB/19MB /sec. Now is 115 MB read/1.2MB write. on same benchmark. Is it possible somehow that driver is chosing - for whatever reason - not to use DMA? If so, is there a way to get the DMA back in the loop?