You may experience either of the following problems when you use an IEEE 1394 device on a Windows Vista-based computer:
| • | After you wake the computer from sleep, the IEEE 1394 device disappears or is no longer available. |
| • | After you repeatedly disconnect and reconnect the IEEE 1394 device, the device disappears or is no longer available. |
The IEEE 1394 device may be an external hard disk or an external optical drive.
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Service pack information
To resolve this problem, obtain the latest service pack for Windows Vista. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
935791 (http://support.microsoft.com/kb/935791/) How to obtain the latest Windows Vista service pack
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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:
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:
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, x86-based versions
| File name | File version | File size | Date | Time | Platform |
|---|
| 1394bus.sys | 6.0.6000.20532 | 53,376 | 08-Feb-2007 | 02:04 | Not applicable |
| Ohci1394.sys | 6.0.6000.20532 | 61,952 | 08-Feb-2007 | 02:04 | Not applicable |
| Update.mum | Not applicable | 2,021 | 08-Feb-2007 | 14:26 | Not applicable |
| X86_1394.inf_31bf3856ad364e35_6.0.6000.20532_none_f9b441c821f58d1e.manifest | Not applicable | 2,363 | 08-Feb-2007 | 14:27 | Not applicable |
Windows Vista, 64-bit versions
| File name | File version | File size | Date | Time | Platform |
|---|
| 1394bus.sys | 6.0.6000.20532 | 65,024 | 08-Feb-2007 | 02:39 | x64 |
| Amd64_1394.inf_31bf3856ad364e35_6.0.6000.20532_none_55d2dd4bda52fe54.manifest | Not applicable | 2,365 | 08-Feb-2007 | 14:33 | Not applicable |
| Ohci1394.sys | 6.0.6000.20532 | 72,064 | 08-Feb-2007 | 02:39 | x64 |
| Update.mum | Not applicable | 2,021 | 08-Feb-2007 | 14:26 | Not applicable |
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Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Windows Vista Service Pack 1.
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For more information about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base:
816915 (http://support.microsoft.com/kb/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 (http://support.microsoft.com/kb/824684/)
Description of the standard terminology that is used to describe Microsoft software updates
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