Microsoft KB Archive/314908

= Adding a Second Mylex AcceleRAID SCSI Controller Causes an Error Message =

Article ID: 314908

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Professional

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This article was previously published under Q314908



SYMPTOMS
If you add a second Mylex AcceleRAID controller to a Windows XP-based computer, you receive the following error message on a blue screen after the Found New Hardware Wizard starts:

STOP 0x000000D1 (0xf8a5802c, 0x00000006, 0x00000000, 0xf847f8a4)

DRIVER_IRQL_NOT_LESS_OR_EQUAL

When you receive this error message, the computer stops responding (hangs).



CAUSE
The original Dac2w2k.sys driver that is included with Windows XP does not work if multiple controllers are installed. The controllers that are affected by this issue include:
 * Mylex AcceleRAID 160
 * Mylex AcceleRAID 170
 * Mylex AcceleRAID 352
 * Mylex eXtremeRAID 2000
 * Mylex eXtremeRAID 3000



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.



MORE INFORMATION
Windows XP does not currently support using two of the controllers that are listed in this article in the same computer.

Keywords: kberrmsg kbprb KB314908

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