PRB: Phar Lap Error 58 Running Visual C++ on Read-Only Drive (107495)
The information in this article applies to:
- Microsoft Visual C++ 1.5
- Microsoft Visual C++ 1.0
- Microsoft Macro Assembler (MASM) 6.1
- Microsoft Macro Assembler (MASM) 6.1a
- Microsoft Macro Assembler (MASM) 6.11
This article was previously published under Q107495 SYMPTOMS
An attempt to execute NMAKE.EXE, CL.EXE, LINK.EXE, or MASM.EXE in MS-DOS
when Windows is not running fails and generates the following message:
Phar Lap err 58: Can't create VM swap file of size 0 in
directory <root directory name>:\
H2INC.EXE and CREF.EXE that ship with MASM version 6.11 generate the same
error. This error does not occur when running in an MS-DOS window under
Microsoft Windows or Microsoft Windows NT.
With Visual C++ for Windows and MASM version 6.1a, the error can also occur
when the TMP environment variable is invalid or points to a read-only
drive. For additional information about the TMP problem, please search in
the Microsoft Knowledge Base on the following words:
CAUSE
Visual C++ is installed on a read-only drive, possibly a network drive. The
error occurs because the DOSXNT MS-DOS extender attempts to create a
virtual memory swap file on the drive DOSXNT runs from when the operating
system does not support virtual memory.
RESOLUTION
To work around this problem, you can run DOSXNT on a read/write drive
listed in your PATH MS-DOS environment variable. Or you can specify one of
the following environment variable settings to prevent DOSXNT from
attempting to create a swap file on the read-only network drive:
- Set the DOSX environment variable to prevent DOSXNT from using any
virtual memory. Edit your AUTOEXEC.BAT file to include the following:
With this option, you may run out of memory due to virtual memory not
being used. If this is the case, use the second solution to set up a
swap directory for the virtual memory.
-or-
- Set the DOSX environment variable to specify where DOSXNT creates the
virtual memory swap file. Edit your AUTOEXEC.BAT file to include the
following
where <path> specifies the drive and directory on which to create the
temporary swap file.
- Set a TMP environment variable that points to a read/write drive with
enough free space for temporary files. If the TMP environment variable
already exists, check to see that it is valid and pointing to a
read/write drive. The TMP environment variable works only for the
version of DOSXNT that comes with Microsoft Visual C++ for Windows
version 1.0 and Microsoft MASM 6.1a.
NOTE: This is not a problem in Visual C++ 2.0, because DOSXNT is not used.
| Modification Type: | Major | Last Reviewed: | 12/1/2003 |
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| Keywords: | kbprb KB107495 |
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