Using Third-Party Disk Management Utilities in Windows NT (101500)
The information in this article applies to:
- Microsoft Windows NT Server 3.1
- Microsoft Windows NT Workstation 3.1
- Microsoft Windows NT Advanced Server 3.1
This article was previously published under Q101500 SUMMARY
Most MS-DOS-based disk management utilities directly access the hard
disk by calling MS-DOS Interrupt 13, Interrupt 25, and Interrupt 26.
The disk I/O model in Windows NT prevents direct access to the hard
disk; an application must call a trusted device driver for access.
This prevents an application from compromising the integrity any
robustness of the operating system.
Some utilities may continue to work, at least in part. For example,
the Xtree disk management utility has two modes: one that writes
directly to the disk and another that uses the regular MS-DOS file
access functions. The latter mode works correctly in Windows NT.
If an application attempts to directly access the disk, the MS-DOS
subsystem displays a message stating that an application attempted to
issue an illegal call. You then have the option to terminate the
application or to ignore the call.
| Modification Type: | Major | Last Reviewed: | 11/20/2003 |
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| Keywords: | kb3rdparty KB101500 |
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