Environment variables used by OS/2

This section contains some information about undocumented or poorly documented environment variables used by OS/2.

Please note, that you must use SET name=value to use the environment variables!

CONNECT_DASD=NO

Turns off DASD checking while installing OS/2. This enables the user to install a product if the installation program thinks there is not enough diskspace (used by the OS/2 WARP Connect installation program)

Available: All versions
Source: various

CONNECT_PREREQ=NO
Turns off prerequisite checking. This enables the user to install a product when the installation program thinks that it cannot be installed (used by the OS/2 WARP Connect installation program).

Available: All versions
Source: various

CONNECT_SNIFF=NO
Turns off network card detection. This may be necessary if the detection logic hangs the machine while detecting adapters (used by the OS/2 WARP Connect installation program).

Available: All versions
Source: various

COPYFROMFLOPPY=1
Set to 1, if the OS/2 installation program should copy drivers from disk A: instead of copying this files from the CD-ROM

Available: All versions
Source: various

DELDIR=path_for_the_deleted_files
This is a real environment variable, see DELDIR

Available: All versions
Source: various

DESKTOP=wps_directory|wps_object_ID
Points to the WPS directory if the object ID <WP_DESKTOP> is missing in the ini file

Available: All versions
Source: various

DIRCMD=default_dir_switches
Used to set the default options for the DIR command
DOSSETTING.{dossetting}={value}
Use the value {value} for the setup string {dossetting} in the next DOS session opended with the START command. (see Start a program with specific settings for an example; WARP 4 only!).

Available: All versions
Source: various

SOURCEPATH=os2_image_directory
Points to the disk images used by the OS/2 installation program SYSINST2.EXE

Available: All versions
Source: various

SYSTEM_INI=C:\OS2\OS2SYS.INI
This statement contains the path & name of the system ini file.

Available: All versions
Source: various

TRUEMODE=1
Set this environment variable to install the TrapDoor feature of WARP 4, even on a machine with SCSI HDs only.

Available: WARP 4 only!
Source: various

USER_INI=C:\OS2\OS2.INI
This statement contains the path & name of the user ini file.

Available: All versions
Source: various

VIDEO_DEVICES=env_var
This statement sets the name of the OS/2 environment variable that contains the base video driver name.

Available: All versions
Source: The OS/2 WARP Survival Guide

VIO_SVGA=DEVICE(BVHVGA,BVHSVGA)
This statement selects the base video support.

Available: All versions
Source: The OS/2 WARP Survival Guide

WIN3DIR=win311_directory
This environment variable must point to the directory with your Windows 3.1 if using the TrapDoor feature of WARP 4.

Available: WARP 4 only!
Source: various

WP_OBJHANDLE=n
This environment variable contains the object handle for the current OS/2 session. This handle is unique for each OS/2 session started via an WPS Object. Note that OS/2 sessions started via the START command inherit the value from the paren.

Available: All versions
Source: various

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