An Ultra DMA Mode 5 device may perform only at the speed of an Ultra DMA Mode 2 device after you swap devices in Windows Vista

An Ultra DMA Mode 5 device may perform only at the speed of an Ultra DMA Mode 2 device after you swap devices in Windows Vista

Article ID : 933578
Last Review : August 29, 2007
Revision : 2.1
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SYMPTOMS

In Windows Vista, an Ultra DMA Mode 5 device may perform only at the speed of an Ultra DMA Mode 2 device after you swap devices.

This problem occurs on an IBM ThinkPad mobile PC or on a Lenovo ThinkPad mobile PC if the following conditions are true:

• You start the computer with an Ultra DMA Mode 2 device in the Ultrabay swappable drive bay. For example, you start the computer with an optical drive in the drive bay.
• You eject the Ultra DMA Mode 2 device from the drive bay and insert an Ultra DMA Mode 5 device in the drive bay. For example, you insert a hard disk drive in the drive bay.

When these conditions are true, the transfer mode stays at the slower Ultra DMA Mode 2 speed. The system does not correctly use the faster Ultra DMA Mode 5 speed.

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RESOLUTION

Hotfix information

A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451 (http://go.microsoft.com/?linkid=6294451)

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support (http://support.microsoft.com/contactus/?ws=support)

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Vista, 32-bit (x86-based) versions
File name File version File size Date Time Platform
Aliide.sys 1.2.0.0 17,592 24-Feb-2007 03:04 x86
Amdide.sys 6.0.6000.20544 18,104 24-Feb-2007 03:04 x86
Atapi.sys 6.0.6000.20544 21,688 24-Feb-2007 03:04 x86
Ataport.sys 6.0.6000.20544 110,264 24-Feb-2007 03:06 x86
Cmdide.sys 2.0.7.0 19,128 24-Feb-2007 03:04 x86
Intelide.sys 6.0.6000.20544 17,592 24-Feb-2007 03:04 x86
Msahci.sys 6.0.6000.20544 25,784 24-Feb-2007 03:04 x86
Pciide.sys 6.0.6000.20544 16,056 24-Feb-2007 03:04 x86
Pciidex.sys 6.0.6000.20544 45,240 24-Feb-2007 03:05 x86
Update.mum Not Applicable 2,024 26-Feb-2007 23:03 Not Applicable
Viaide.sys 5.1.3790.150 20,152 24-Feb-2007 03:04 x86
X86_mshdc.inf_31bf3856ad364e35_6.0.6000.20544_none_dbb443eb3d9db847.manifest Not Applicable 5,818 26-Feb-2007 23:05 Not Applicable
Windows Vista, 64-bit versions
File name File version File size Date Time Platform
Aliide.sys 1.2.0.0 18,616 24-Feb-2007 04:31 x64
Amd64_mshdc.inf_31bf3856ad364e35_6.0.6000.20544_none_37d2df6ef5fb297d.manifest Not Applicable 5,820 26-Feb-2007 23:12 Not Applicable
Amdide.sys 6.0.6000.20544 18,616 24-Feb-2007 04:32 x64
Atapi.sys 6.0.6000.20544 22,712 24-Feb-2007 04:32 x64
Ataport.sys 6.0.6000.20544 124,088 24-Feb-2007 04:33 x64
Cmdide.sys 2.0.7.0 20,664 24-Feb-2007 04:32 x64
Intelide.sys 6.0.6000.20544 19,128 24-Feb-2007 04:32 x64
Msahci.sys 6.0.6000.20544 27,320 24-Feb-2007 04:32 x64
Pciide.sys 6.0.6000.20544 16,056 24-Feb-2007 04:31 x64
Pciidex.sys 6.0.6000.20544 51,384 24-Feb-2007 04:32 x64
Update.mum Not Applicable 2,024 26-Feb-2007 23:03 Not Applicable
Viaide.sys 5.1.3790.150 20,664 24-Feb-2007 04:32 x64

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WORKAROUND

To work around this problem, start the computer with the Ultra DMA Mode 5 drive in the Ultrabay drive bay.

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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the Applies to section.

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MORE INFORMATION

For more information about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base:

816915 (/Feedback.aspx?kbNumber=816915/) New file naming schema for Microsoft Windows software update packages

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 (/Feedback.aspx?kbNumber=824684/) Description of the standard terminology that is used to describe Microsoft software updates

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

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APPLIES TO
• Windows Vista Home Basic
• Windows Vista Home Premium
• Windows Vista Ultimate
• Windows Vista Business
• Windows Vista Enterprise
• Windows Vista Starter
• Windows Vista Home Basic 64-bit Edition
• Windows Vista Home Premium 64-bit Edition
• Windows Vista Ultimate 64-bit Edition
• Windows Vista Enterprise 64-bit Edition

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Keywords: 
kbbug kbnofix kbqfe kbprb kbexpertiseinter kbhotfixserver KB933578

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Microsoft Knowledge Base Article

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