A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that this article describes. Apply it only to systems that are experiencing this specific problem.
To resolve this problem, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer 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 SP level
----------------------------------------------------------------
11-Sep-2002 22:17 5.1.2600.100 22,144 Usbstor.sys none
11-Sep-2002 18:15 5.1.2600.1120 22,144 Usbstor.sys SP1
This fix is included in Windows XP Service Pack 2.
Method 1
You must also add the following registry value to the Setupreg.hiv file in the WinPE image after you install the hotfix:
Key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\UsbStor\VVVVPPPP
(where
VVVV is the Vendor ID [VID], and
PPPP is the Product ID [PID])
Value (DWORD):
DriverFlags
Value Data:
0x00000001 (1) = DeviceProtocolBulkOnly
0x00000002 (2) = DeviceProtocolCBI
0x00000003 (3) = DeviceProtocolCB
For example, for a CBI-mode USB floppy disk drive with a VID of 0644 and an PID of 0000, the registry value would be the following:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\UsbStor\06440000
DriverFlags = 0x00000002
To add this value to the Setupreg.hiv file in the WinPE image, follow these steps:
-
In the WINPE folder on the Windows XP OEM Preinstall Kit (OPK) image, locate the Winpesys.inf file, open it for editing, and then add the following line to the [AddReg] section
HKLM,"ControlSet001\Control\UsbStor\VVVVPPPP","DriverFlags",0x00010003,2
Save the changes to the Winpesys.inf file.
-
In the WINPE folder, run the Mkimg command to create a new Setupreg.hiv file, as follows
where "E" is your computer's CD-ROM or DVD-ROM drive, and "C:\WinPE.tmp" is the build location of your WinPE source files.
-
Copy the hotfix file (Usbstor.sys) to the i386\system32\drivers folder in the build location of your WinPE source files (for example, C:\WinPE.tmp\i386\system32\drivers).
-
Create the WinPE CD image by using the Oscdimg.exe tool. The following is an example of the command-line syntax for Oscdimg.exe
Oscdimg -betfsboot.com -n -h c:\winpe.tmp c:\usb.iso
If Method 1 is not appropriate for your situation, you can use any of the following three methods.
Method 2: Use Drvload
When Windows PE starts, use Drvload.exe. Drvload is included in Windows PE 2.0 or later versions to load theUsbstor.inf file. This causes the floppy disk drive to be configured correctly, based on the information that is contained in the Usbstor.inf file, and this prevents the problem from occurring.
Example:
Drvload x:\windows\inf\usbstor.inf
Note Drvload will return the error code "(0x80070103)" if the usbstor driver is already loaded.
Method 3: Use Devcon
Use Devcon.exe with the following command to remove the device. This causes the device to be scanned, and the floppy disk drive can be used.
Example:
Devcon remove "USB\Class_08&SubClass_04"
Devcon rescan
// Class code 08h : Mass Storage Class
// SubClass code 04h : UFI
// Protocol code 00h : CBI
Note Devcon.exe is available as a sample source in the Windows Drivers Kit (DDK).
Method 4: Reconnect the drive
When the issue occurs, reconnect the drive.
Be aware that this issue does not occur if you connect the FDD after Windows PE starts.