misc/62897: Failure - READ_DMA

[Merritt Draney]

>Number:         62897
>Category:       misc
>Synopsis:       Failure - READ_DMA
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Feb 15 19:40:18 PST 2004
>Closed-Date:
>Last-Modified:
>Originator:     Merritt Draney
>Release:        5.2.1-RC2
>Organization:
>Environment:
>Description:
kernel panics when booting up and says

mounting root from ufs:/dev/ad0s2a
ad0:Warning - READ_DMA UDMA ICRC error(retrying request) LBA=40974006
ad0:Warning - READ_DMA UDMA ICRC error(retrying request) LBA=40974006 
ad0:Failure - READ_DMA status=51<READY,DSC,ERROR> error=84<ICRC,ABORTED> LBA=40974006    
ad0:Warning - READ_DMA UDMA ICRC error(retrying request) LBA=1
ad0:Warning - READ_DMA UDMA ICRC error(retrying request) LBA=1
ad0:Failure - READ_DMA status=51<READY,DSC,ERROR> error=84<ICRC,ABORTED> LBA=40974006    
root mount failed

I have a Via KT333 VT8367 NB, VT8233A SB Board with a Athlon 1800+ proc.  The drive in question is a Ultra DMA 1000 atapi device.  Works under windows 2000 and NetBSD.
>How-To-Repeat:
restart in default mode, safe mode works but writing to disk is very slow.     
>Fix:
      
>Release-Note:
>Audit-Trail:
>Unformatted: