16-Bit MS-DOS-Based Programs Cannot Change Label with CreateNewFile() Function

View products that this article applies to.

This article was previously published under Q263926

SYMPTOMS

16-bit MS-DOS-based program behave differently under Windows 2000 than under MS-DOS when they call the CreateNewFile function (INT 21h, AH=5Bh) to write a disk label (CX=08h).

Back to the top

RESOLUTION

To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 (http://support.microsoft.com/kb/260910/EN-US/ ) How to Obtain the Latest Windows 2000 Service Pack

Back to the top

Windows 2000

The English version of this fix should have the following file attributes or later:

   Date    Time    Size     Version        File name
----------------------------------------------------
   6/8/00  3:55PM  395,024  5.0.2195.2096  Ntvdm.exe

Back to the top

WORKAROUND

You can use the CreateFile function (INT 21H, AH=3Ch) to change the label. However, to use this method, you must have access to the source code for the program.

Back to the top

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows 2000 Service Pack 2.

Back to the top