Running SCANDISK /ALL While a Virtual Drive Exists (108496)
The information in this article applies to:
• Microsoft MS-DOS operating system 6.2
• Microsoft MS-DOS operating system 6.21
• Microsoft MS-DOS operating system 6.22
This article was previously published under Q108496
Running SCANDISK /ALL incorrectly scans virtual drives created using the
Microsoft has confirmed this to be a problem in the ScanDisk program
included with MS-DOS versions 6.2, 6.21, and 6.22. We are researching this
problem and will post new information here in the Microsoft Knowledge Base
as it becomes available.
If you use drive A as a virtual drive (for example, by using the command
SUBST A: C:\DOS), running SCANDISK A: results in the following error
The error message recommends running ScanDisk on drive C because the
physical directory actually resides on C. This is normal.
If you run SCANDISK /ALL, ScanDisk actually diagnoses the virtual drive.
While this should not cause errors, Microsoft recommends that you not run
SCANDISK /ALL while a virtual drive exists.
| Modification Type:
|| Last Reviewed: