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Knowledge Base > Archive > Products > IFD/IFL/IFW - Version 1 > USB 1.1 Device Does Not Appear In Image for DOS

USB 1.1 Device Does Not Appear In Image for DOS

Please note: This article applies to version 1 product(s) only.

Problem:

Your USB 1.1 device does not appear in Image for DOS.

Cause:

USB 1.1 support is not enabled in the Image for DOS environment, or is not supported by your system.

Solution:

Enable UHCI support in Image for DOS using the UHCI environment variable.  To enable the UHCI environment variable, you can either set it manually, or within a batch file.  The command required is as follows:

set IFD=UHCI

If you are using other Image for DOS environment variables, such as IBXT or CDWS, you will need to separate the variables with a semicolon.  For example:

set IFD=IBXT;CDWS:4;UHCI

If you wish to set Image for DOS environment variables in AUTOEXEC.BAT, you must use a DOS floppy diskette.  A floppy diskette created with MakeDisk will not use AUTOEXEC.BAT.  (However, you can use MakeDisk to enable UHCI support; please see below.)


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