Device Manager does not display a drive after you hot-swap the drive between slots on a PCI-E switch in Windows 7 or in Windows Server 2008 R2

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Article ID: 2601456 - View products that this article applies to.
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SYMPTOMS

Consider the following scenario:
  • You insert a PCI Express (PCI-E) switch into a PCI-E slot on a computer that is running Windows 7 or Windows Server 2008 R2.
  • You insert a PCI-E solid-state drive into a slot on the switch.
Note After you perform this action, both the storage controller and the drive are displayed in Device Manager.
  • You hot-swap the drive between different slots on the switch.
In this scenario, the drive is not displayed in Device Manager. Only the storage controller is displayed in Device Manager.

Notes
  • If you remove the drive from a slot, and then reinsert the drive into the same slot, both the controller and the drive are displayed in Device Manager.
  • If you insert a new drive into any of the slots on the switch, it is displayed in Device Manager correctly.
  • If you restart the computer, the drive is displayed in Device Manager correctly.
  • This issue also occurs on PCI-E devices that have a unique serial number and that use line-based interrupts.

CAUSE

This issue occurs because the same device instance ID is assigned to the drive when the drive is moved to a new slot. Therefore, Windows uses an incorrect interrupt line for the drive.

Windows uses the device instance ID as a registry key to cache the routing information (such as the interrupt line number) for PCI-E devices. The interrupt line number is determined by the slot number. On old PCI-E devices, the PCI slot number is part of the device instance ID. Therefore, a different device instance ID is generated when a device is moved to a new slot. However, new PCI-E devices support a unique serial number that is used as the device instance ID.

RESOLUTION

Hotfix information

A supported hotfix is 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 the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if 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. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=support
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must be running one of the following operating systems:
  • Windows 7
  • Windows 7 Service Pack 1 (SP1)
  • Windows Server 2008 R2
  • Windows Server 2008 R2 Service Pack 1 (SP1)
For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

To use the hotfix in this package, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.
Windows 7 and Windows Server 2008 R2 file information notes
  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
    Collapse this tableExpand this table
    VersionProductMilestoneService branch
    6.1.760 0.16xxxWindows 7 and Windows Server 2008 R2RTMGDR
    6.1.760 0.21xxxWindows 7 and Windows Server 2008 R2RTMLDR
    6.1.760 1.17xxxWindows 7 and Windows Server 2008 R2SP1GDR
    6.1.760 1.21xxxWindows 7 and Windows Server 2008 R2SP1LDR
  • GDR service branches contain only those fixes that are widely released to address widespread, extremely important issues. LDR service branches contain hotfixes in addition to widely released fixes.
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 R2 and for Windows 7" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.
For all supported x86-based versions of Windows 7
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Acpi.sys6.1.7600.16879274,28807-Sep-201104:41x86
Acpi.sys6.1.7600.21047274,28807-Sep-201104:31x86
Acpi.sys6.1.7601.17686274,28807-Sep-201104:30x86
Acpi.sys6.1.7601.21812274,28807-Sep-201106:27x86
Pci.sys6.1.7600.16879153,96807-Sep-201104:42x86
Pci.sys6.1.7600.21047153,96807-Sep-201104:31x86
Termdd.sys6.1.7600.2104751,56807-Sep-201104:31x86
Volmgr.sys6.1.7600.2104753,10407-Sep-201104:31x86
Pci.sys6.1.7601.17686153,96807-Sep-201104:31x86
Pci.sys6.1.7601.21812154,48007-Sep-201106:28x86
Volmgr.sys6.1.7601.2181253,10407-Sep-201106:28x86
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Acpi.sys6.1.7600.16879334,70407-Sep-201105:38x64
Acpi.sys6.1.7600.21047334,70407-Sep-201105:29x64
Acpi.sys6.1.7601.17686334,70407-Sep-201105:43x64
Acpi.sys6.1.7601.21812334,70407-Sep-201107:03x64
Pci.sys6.1.7600.16879184,68807-Sep-201105:38x64
Pci.sys6.1.7600.21047185,20007-Sep-201105:30x64
Termdd.sys6.1.7600.2104762,32007-Sep-201105:30x64
Volmgr.sys6.1.7600.2104771,53607-Sep-201105:30x64
Pci.sys6.1.7601.17686184,68807-Sep-201105:43x64
Pci.sys6.1.7601.21812185,20007-Sep-201107:04x64
Volmgr.sys6.1.7601.2181270,51207-Sep-201107:04x64
For all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Acpi.sys6.1.7600.16879834,41607-Sep-201104:04IA-64
Acpi.sys6.1.7600.21047835,44007-Sep-201104:23IA-64
Acpi.sys6.1.7601.17686835,44007-Sep-201104:07IA-64
Acpi.sys6.1.7601.21812835,44007-Sep-201104:13IA-64
Pci.sys6.1.7600.16879455,53607-Sep-201104:04IA-64
Pci.sys6.1.7600.21047457,58407-Sep-201104:23IA-64
Termdd.sys6.1.7600.21047160,11207-Sep-201104:24IA-64
Volmgr.sys6.1.7600.21047164,20807-Sep-201104:24IA-64
Pci.sys6.1.7601.17686456,04807-Sep-201104:07IA-64
Pci.sys6.1.7601.21812458,09607-Sep-201104:15IA-64
Volmgr.sys6.1.7601.21812164,20807-Sep-201104:15IA-64

STATUS

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

MORE INFORMATION

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional file information

Additional file information for Windows 7 and for Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7
Collapse this tableExpand this table
File nameX86_acpi.inf_31bf3856ad364e35_6.1.7600.16879_none_226df4b92f4f9fe7.manifest
File versionNot Applicable
File size3,164
Date (UTC)07-Sep-2011
Time (UTC)11:26
File nameX86_acpi.inf_31bf3856ad364e35_6.1.7600.21047_none_2315d8d64856ec72.manifest
File versionNot Applicable
File size3,164
Date (UTC)07-Sep-2011
Time (UTC)11:26
File nameX86_acpi.inf_31bf3856ad364e35_6.1.7601.17686_none_244680f52c80dbbf.manifest
File versionNot Applicable
File size3,164
Date (UTC)07-Sep-2011
Time (UTC)11:26
File nameX86_acpi.inf_31bf3856ad364e35_6.1.7601.21812_none_2517cdf245694fbd.manifest
File versionNot Applicable
File size3,164
Date (UTC)07-Sep-2011
Time (UTC)11:26
File nameX86_machine.inf_31bf3856ad364e35_6.1.7600.16879_none_b9f81df11ff8aa19.manifest
File versionNot Applicable
File size9,456
Date (UTC)07-Sep-2011
Time (UTC)11:26
File nameX86_machine.inf_31bf3856ad364e35_6.1.7600.21047_none_baa0020e38fff6a4.manifest
File versionNot Applicable
File size9,456
Date (UTC)07-Sep-2011
Time (UTC)11:26
File nameX86_machine.inf_31bf3856ad364e35_6.1.7601.17686_none_bbd0aa2d1d29e5f1.manifest
File versionNot Applicable
File size9,456
Date (UTC)07-Sep-2011
Time (UTC)11:26
File nameX86_machine.inf_31bf3856ad364e35_6.1.7601.21812_none_bca1f72a361259ef.manifest
File versionNot Applicable
File size9,456
Date (UTC)07-Sep-2011
Time (UTC)11:26
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameAmd64_acpi.inf_31bf3856ad364e35_6.1.7600.16879_none_7e8c903ce7ad111d.manifest
File versionNot Applicable
File size3,168
Date (UTC)07-Sep-2011
Time (UTC)11:36
File nameAmd64_acpi.inf_31bf3856ad364e35_6.1.7600.21047_none_7f34745a00b45da8.manifest
File versionNot Applicable
File size3,168
Date (UTC)07-Sep-2011
Time (UTC)11:36
File nameAmd64_acpi.inf_31bf3856ad364e35_6.1.7601.17686_none_80651c78e4de4cf5.manifest
File versionNot Applicable
File size3,168
Date (UTC)07-Sep-2011
Time (UTC)11:36
File nameAmd64_acpi.inf_31bf3856ad364e35_6.1.7601.21812_none_81366975fdc6c0f3.manifest
File versionNot Applicable
File size3,168
Date (UTC)07-Sep-2011
Time (UTC)11:36
File nameAmd64_machine.inf_31bf3856ad364e35_6.1.7600.16879_none_1616b974d8561b4f.manifest
File versionNot Applicable
File size7,894
Date (UTC)07-Sep-2011
Time (UTC)11:36
File nameAmd64_machine.inf_31bf3856ad364e35_6.1.7600.21047_none_16be9d91f15d67da.manifest
File versionNot Applicable
File size7,894
Date (UTC)07-Sep-2011
Time (UTC)11:36
File nameAmd64_machine.inf_31bf3856ad364e35_6.1.7601.17686_none_17ef45b0d5875727.manifest
File versionNot Applicable
File size7,894
Date (UTC)07-Sep-2011
Time (UTC)11:36
File nameAmd64_machine.inf_31bf3856ad364e35_6.1.7601.21812_none_18c092adee6fcb25.manifest
File versionNot Applicable
File size7,894
Date (UTC)07-Sep-2011
Time (UTC)11:36
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameIa64_acpi.inf_31bf3856ad364e35_6.1.7600.16879_none_226f98af2f4da8e3.manifest
File versionNot Applicable
File size3,166
Date (UTC)07-Sep-2011
Time (UTC)11:20
File nameIa64_acpi.inf_31bf3856ad364e35_6.1.7600.21047_none_23177ccc4854f56e.manifest
File versionNot Applicable
File size3,166
Date (UTC)07-Sep-2011
Time (UTC)11:20
File nameIa64_acpi.inf_31bf3856ad364e35_6.1.7601.17686_none_244824eb2c7ee4bb.manifest
File versionNot Applicable
File size3,166
Date (UTC)07-Sep-2011
Time (UTC)11:20
File nameIa64_acpi.inf_31bf3856ad364e35_6.1.7601.21812_none_251971e8456758b9.manifest
File versionNot Applicable
File size3,166
Date (UTC)07-Sep-2011
Time (UTC)11:20
File nameIa64_machine.inf_31bf3856ad364e35_6.1.7600.16879_none_b9f9c1e71ff6b315.manifest
File versionNot Applicable
File size6,844
Date (UTC)07-Sep-2011
Time (UTC)11:20
File nameIa64_machine.inf_31bf3856ad364e35_6.1.7600.21047_none_baa1a60438fdffa0.manifest
File versionNot Applicable
File size6,844
Date (UTC)07-Sep-2011
Time (UTC)11:20
File nameIa64_machine.inf_31bf3856ad364e35_6.1.7601.17686_none_bbd24e231d27eeed.manifest
File versionNot Applicable
File size6,844
Date (UTC)07-Sep-2011
Time (UTC)11:20
File nameIa64_machine.inf_31bf3856ad364e35_6.1.7601.21812_none_bca39b20361062eb.manifest
File versionNot Applicable
File size6,844
Date (UTC)07-Sep-2011
Time (UTC)11:20

Properties

Article ID: 2601456 - Last Review: October 12, 2011 - Revision: 1.0
APPLIES TO
  • Windows 7 Enterprise
  • Windows 7 Home Basic
  • Windows 7 Home Premium
  • Windows 7 Professional
  • Windows 7 Starter
  • Windows 7 Ultimate
  • Windows Server 2008 R2 Datacenter
  • Windows Server 2008 R2 Enterprise
  • Windows Server 2008 R2 for Itanium-Based Systems
  • Windows Server 2008 R2 Foundation
  • Windows Server 2008 R2 Standard
  • Windows Web Server 2008 R2
Keywords: 
kbautohotfix kbqfe kbhotfixserver kbfix kbsurveynew kbexpertiseinter KB2601456

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