Article ID: 842655
Article Last Modified on 5/27/2005
APPLIES TO
- Microsoft Windows CE .NET 4.2
SYMPTOMS
A FAT file system cache buffer may be reused when the flash media driver reads a sector that was unmapped in the flash array. For unmapped sectors, when the flash media driver reads no data but does not clear the buffer, old data is returned. When the FAT file system reads directory sector data, the old data may cause the FAT file system to report a directory listing of files that do not exist. Or, the old data may cause the FAT file system to report a directory listing that has garbage data. This problem may occur more frequently on flash media devices that are new or that have been recently formatted.
RESOLUTION
Software update information
A supported software update is now available from Microsoft as Windows CE 4.2 Core OS QFE 842655. To resolve this problem immediately, click the following article number for information about obtaining Windows CE Platform Builder and core operating system software updates:
837392 How to locate core operating system fixes for Microsoft Windows CE Platform Builder products
Prerequisites
This update is supported only if all previously issued updates for this product have also been installed.
Restart requirement
After you install this update, you must perform a clean build of the whole platform. To clean the platform, click Clean on the Build menu. To build the platform, click Build Platform on the Build menu. You do not have to restart your computer after you apply this update.
Update replacement information
This update does not replace any other updates.
File information
The English version of this update 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 -------------------------------------------------------------- 11-Jun-2004 18:53 4.21 781,048 Wincepb42-040611-kb842655-armv4.exe 11-Jun-2004 18:53 4.21 781,048 Wincepb42-040611-kb842655-armv4i.exe 11-Jun-2004 18:53 4.21 789,240 Wincepb42-040611-kb842655-mipsii.exe 11-Jun-2004 18:53 4.21 789,240 Wincepb42-040611-kb842655-mipsii_fp.exe 11-Jun-2004 18:53 4.21 797,432 Wincepb42-040611-kb842655-mipsiv.exe 11-Jun-2004 18:53 4.21 797,432 Wincepb42-040611-kb842655-mipsiv_fp.exe 11-Jun-2004 18:53 4.21 768,760 Wincepb42-040611-kb842655-sh3.exe 11-Jun-2004 18:53 4.21 764,664 Wincepb42-040611-kb842655-sh4.exe 11-Jun-2004 18:53 4.21 744,184 Wincepb42-040611-kb842655-x86.exe
The English version of this update 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 -------------------------------------------------------------- Path: Public\Common\Oak\Drivers\Fsd\Fatutil\Main 27-May-2004 23:42 22,999 Formatdisk.cpp Path: Public\Common\Oak\Lib\Armv4\Debug 27-May-2004 23:40 230,754 Fal.lib 27-May-2004 23:40 61,440 Fal.pdb 27-May-2004 23:40 275,418 Fatutil_main.lib 27-May-2004 23:40 86,016 Fatutil_main.pdb Path: Public\Common\Oak\Lib\Armv4\Retail 27-May-2004 23:40 107,258 Fal.lib 27-May-2004 23:40 61,440 Fal.pdb 27-May-2004 23:40 193,426 Fatutil_main.lib 27-May-2004 23:40 86,016 Fatutil_main.pdb Path: Public\Common\Oak\Lib\Armv4i\Debug 27-May-2004 23:40 230,968 Fal.lib 27-May-2004 23:40 61,440 Fal.pdb 27-May-2004 23:40 275,906 Fatutil_main.lib 27-May-2004 23:40 86,016 Fatutil_main.pdb Path: Public\Common\Oak\Lib\Armv4i\Retail 27-May-2004 23:40 107,478 Fal.lib 27-May-2004 23:40 61,440 Fal.pdb 27-May-2004 23:40 193,758 Fatutil_main.lib 27-May-2004 23:40 86,016 Fatutil_main.pdb Path: Public\Common\Oak\Lib\Mipsii\Debug 27-May-2004 23:41 248,670 Fal.lib 27-May-2004 23:41 61,440 Fal.pdb 27-May-2004 23:41 270,140 Fatutil_main.lib 27-May-2004 23:41 86,016 Fatutil_main.pdb Path: Public\Common\Oak\Lib\Mipsii\Retail 27-May-2004 23:41 107,954 Fal.lib 27-May-2004 23:41 61,440 Fal.pdb 27-May-2004 23:41 195,756 Fatutil_main.lib 27-May-2004 23:41 86,016 Fatutil_main.pdb Path: Public\Common\Oak\Lib\Mipsii_fp\Debug 27-May-2004 23:41 248,706 Fal.lib 27-May-2004 23:41 61,440 Fal.pdb 27-May-2004 23:41 270,188 Fatutil_main.lib 27-May-2004 23:41 86,016 Fatutil_main.pdb Path: Public\Common\Oak\Lib\Mipsii_fp\Retail 27-May-2004 23:41 107,978 Fal.lib 27-May-2004 23:41 61,440 Fal.pdb 27-May-2004 23:41 195,844 Fatutil_main.lib 27-May-2004 23:41 86,016 Fatutil_main.pdb Path: Public\Common\Oak\Lib\Mipsiv\Debug 27-May-2004 23:41 251,146 Fal.lib 27-May-2004 23:41 61,440 Fal.pdb 27-May-2004 23:41 275,424 Fatutil_main.lib 27-May-2004 23:41 86,016 Fatutil_main.pdb Path: Public\Common\Oak\Lib\Mipsiv\Retail 27-May-2004 23:41 109,496 Fal.lib 27-May-2004 23:41 61,440 Fal.pdb 27-May-2004 23:41 198,186 Fatutil_main.lib 27-May-2004 23:41 86,016 Fatutil_main.pdb Path: Public\Common\Oak\Lib\Mipsiv_fp\Debug 27-May-2004 23:41 251,182 Fal.lib 27-May-2004 23:41 61,440 Fal.pdb 27-May-2004 23:41 275,472 Fatutil_main.lib 27-May-2004 23:41 86,016 Fatutil_main.pdb Path: Public\Common\Oak\Lib\Mipsiv_fp\Retail 27-May-2004 23:41 109,520 Fal.lib 27-May-2004 23:41 61,440 Fal.pdb 27-May-2004 23:41 198,272 Fatutil_main.lib 27-May-2004 23:41 86,016 Fatutil_main.pdb Path: Public\Common\Oak\Lib\Sh3\Debug 27-May-2004 23:41 208,012 Fal.lib 27-May-2004 23:41 61,440 Fal.pdb 27-May-2004 23:42 247,220 Fatutil_main.lib 27-May-2004 23:42 86,016 Fatutil_main.pdb Path: Public\Common\Oak\Lib\Sh3\Retail 27-May-2004 23:41 97,820 Fal.lib 27-May-2004 23:41 61,440 Fal.pdb 27-May-2004 23:42 180,922 Fatutil_main.lib 27-May-2004 23:42 86,016 Fatutil_main.pdb Path: Public\Common\Oak\Lib\Sh4\Debug 27-May-2004 23:42 207,910 Fal.lib 27-May-2004 23:42 61,440 Fal.pdb 27-May-2004 23:42 247,220 Fatutil_main.lib 27-May-2004 23:42 86,016 Fatutil_main.pdb Path: Public\Common\Oak\Lib\Sh4\Retail 27-May-2004 23:42 97,648 Fal.lib 27-May-2004 23:42 61,440 Fal.pdb 27-May-2004 23:42 180,592 Fatutil_main.lib 27-May-2004 23:42 86,016 Fatutil_main.pdb Path: Public\Common\Oak\Lib\X86\Debug 27-May-2004 23:40 209,184 Fal.lib 27-May-2004 23:40 61,440 Fal.pdb 27-May-2004 23:40 230,896 Fatutil_main.lib 27-May-2004 23:40 86,016 Fatutil_main.pdb Path: Public\Common\Oak\Lib\X86\Retail 27-May-2004 23:40 95,058 Fal.lib 27-May-2004 23:40 61,440 Fal.pdb 27-May-2004 23:40 166,052 Fatutil_main.lib 27-May-2004 23:40 86,016 Fatutil_main.pdb
An unmapped sector is the flash array in a logical disk sector that has never contained any data since the media was formatted.
STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Keywords: kbbug kbfix kbqfe KB842655
