Problems with DMA on IDE/ServerWorks/Seagate.
Quoted 7 lines
Date: Wed, 14 Jul 2004 17:16:14 -0700
From: "Dave Woods" <[email protected]>
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We have diagnosed a problem (file corruption) using Ultra DMA & IDE withServerWorks OSB4 Chipset and Seagate drives under heavy disk I/O.
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This chipset has buggy IDE DMA.
I maintain several boxes with OSB4 and IDE devices (HD, CDR-W, DVD-RW). Best solution is using an add-on card (e.g. Promise Ultra66 card). Otherwise, I found two configurations that always work: multi-device, and single-device. In multi-device, operate all devices in PIO - no exceptions! In single-device, meaning the other three interfaces are unused, you can safely enable MW-DMA Mode 2.