SYMPTOMS
A delay may occur when you copy or save a file from Windows
Explorer or from another program (such as Microsoft Word) to a flash card on
your portable computer. This delay may result in data loss. For example,
when you save or copy a file to a flash card and then remove the flash
card from the flash card reader, the file may not be saved to the
card. In some situations, a temporary file is saved to the card. Additionally,
you receive the following error message:
Windows Delayed Write Failed
RESOLUTION
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.
To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:
Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question. The English version of
this fix has the file attributes (or later) 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 tool in Control Panel.
Date Time Version Size File name
------------------------------------------------------------
14-Apr-2003 18:53 5.0.2195.6736 35,856 Classpnp.sys
14-Apr-2003 18:53 5.0.2195.6736 140,976 Fastfat.sys
Note Because of file dependencies, this update requires Windows 2000
Service Pack 4 (SP4).
Note To make this fix work, you must create the following registry key on the computer that hosts the compact flash reader
Subkey: HKLM\System\CurrentControlSet\Services\<Provider>
Entry Name: HotPlugAlwaysEnable
Type: REG_MULTI_SZ
Data: <device name string>
where:
- <Provider> is the type of disk. This is typically Disk.
- <device name string> is the actual device name string.
For example, for "USBAT USB Card Reader" devices, the registry would look like the following:
Subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Disk
Entry Name: HotPlugAlwaysEnable
Type: REG_MULTI_SZ
Data: USBAT Compact Flash
To find the
<device name string>, look up the device in Device Manager. In this example, the device is shown as "USBAT Compact Flash USB Card Reader." The string begins with the vendor string ("USBAT"). That is followed by the product ID string ("Compact Flash"). The "USB Device" or other description at the end is not needed in this string.
Optionally, you can use the tool Hotplugreg.exe from Microsoft to determine the
<device name string> for your device.