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the variables between percentage signs are called &quot;Environment Variables&quot;...<br />
some of them are hidden like the one you mentioned: %SystemRoot%<br />
<br />
all of the defined Environment Variables could seen in this place: <br />
for XP: control panel / system (properties) / advanced tab / Environment Variables (button on the bottom!)<br />
<br />
some of them are defined by default when you install windows, others are defined by installing programs.<br />
<br />
BUT<br />
<br />
there is no variable that would represent the CD-Rom drive path...<br />
<br />
I don't know want purpose you have for looking for such environment variable, but there are lots of solutions for any kind of operation you may want to perform...<br />
<br />
tell me what you want to do with for example %CD-ROM%, then I'll tell you exactly what's the solution...
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the variables between percentage signs are called "Environment Variables"...
some of them are hidden like the one you mentioned: %SystemRoot%

all of the defined Environment Variables could seen in this place:
for XP: control panel / system (properties) / advanced tab / Environment Variables (button on the bottom!)

some of them are defined by default when you install windows, others are defined by installing programs.

BUT

there is no variable that would represent the CD-Rom drive path...

I don't know want purpose you have for looking for such environment variable, but there are lots of solutions for any kind of operation you may want to perform...

tell me what you want to do with for example %CD-ROM%, then I'll tell you exactly what's the solution...

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my customer wants to reference a file in a folder off the root of the CD drive, in a VB program that's running from the C:\ drive.
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my customer wants to reference a file in a folder off the root of the CD drive, in a VB program that's running from the C:\ drive.

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<div class="content wysiwyg-content">
%SystemRoot%<br />
of course, is the designation for the C:\WINDOWS\ or the C:\WINNT\ directory, depending on our PC<br />
<br />
how do i declare the CD-ROM drive? &nbsp; %CD-ROM% ?<br />
and what if there are more than one CD-ROM drive?<br />

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%SystemRoot%
of course, is the designation for the C:\WINDOWS\ or the C:\WINNT\ directory, depending on our PC

how do i declare the CD-ROM drive?   %CD-ROM% ?
and what if there are more than one CD-ROM drive?


%CD-ROM% = %SystemRoot% for the CD Rom drive?

This topic area includes legacy versions of Windows prior to Windows 2000: Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions including Windows Mobile.