I believe ykhwong's CVS build of DosBox includes the patch that has the functionality that enables you to switch between CD's just like it works with floppies.

I've never used it tho.

Yes, it works. My build includes prompt's cd image disk cycling patch.
usage :
imgmount d disc1.img disc2.img disc... -t iso
default keys:
cycle disk: ctrl-f3
cycle drive: alt-f3 (only needed with multiple drives: Selects drive whose disks are to be cycled)

Thank you for your reply. Unfortunately, I tried running your build, but I ran into other problems running my game which I have not seen before. Does anyone else have any suggestions?

Hmmmm, could you be more specific about the problems with ykhwong's build?
Various solutions to playing Ripper are on my site, perhaps they can help you get the game working with it.

Oh, the game, Ripper, works very well. The issue is that it requires 6 CDs which need to be constantly switched. I was hoping to find a way to mount all of the disks as image files onto a virtual drive and simply load these image disks as needed. The image files run more efficiently than the CDs are less of an annoyance.

I got that, but you didn't say what is the problem with ykhwong's build...

My dosbox.conf file includes the following when using the build:

mount D D:\ -t cdrom -usecd 0 -ioctl
imgmount E "C:\Ripper\RIPPER1.iso" "C:\Ripper\RIPPER2.iso" "C:\Ripper\RIPPER3.iso" "C:\Ripper\RIPPER4.iso" "C:\Ripper\RIPPER5.iso" "C:\Ripper\RIPPER6.iso" -t iso
mount C C:\Ripper
C:\RIPPER /v3

The image mounted files on drive E are not recognized and the game asks me for the disks in Drive D. If I leave off the "mount D" line, the program will not recognize a CD-rom and will not start.

It should be more like this (imgmount replaces mount for D):

imgmount D "C:\Ripper\RIPPER1.iso" "C:\Ripper\RIPPER2.iso" "C:\Ripper\RIPPER3.iso" "C:\Ripper\RIPPER4.iso" "C:\Ripper\RIPPER5.iso" "C:\Ripper\RIPPER6.iso" -t iso
mount C C:\Ripper
C:\RIPPER /v3

I tried that too, but it did not work. When I load:

imgmount E "C:\Ripper\RIPPER1.iso" "C:\Ripper\RIPPER2.iso" "C:\Ripper\RIPPER3.iso" "C:\Ripper\RIPPER4.iso" "C:\Ripper\RIPPER5.iso" "C:\Ripper\RIPPER6.iso" -t iso

None of the disks load. If I try:

imgmount E "C:\Ripper\RIPPER1.iso" -t iso
imgmount E "C:\Ripper\RIPPER2.iso" -t iso

Only disk 1 loads.

Is there any error message? (Please post it)
Have you made sure that you are using ykhwong's build?

When the dosbox.conf file reads:

mount D D:\ -t cdrom -usecd 0 -ioctl
imgmount E "C:\Ripper\RIPPER1.iso" "C:\Ripper\RIPPER2.iso" "C:\Ripper\RIPPER3.iso" "C:\Ripper\RIPPER4.iso" "C:\Ripper\RIPPER5.iso" "C:\Ripper\RIPPER6.iso" -t iso
mount C C:\Ripper

The errors read:

For CD-ROM images: imgmount Drive-letter location-of-image -t iso
For hardrive images: Must specify drive geometry for hard drives: bytes_persector, sectors_per_cylinder, heads_per_cylinder, cylinder_count.

The commands seem to then repeat themselves, mounting the D drive again as well as the E drive which generates this message:

MSCDEX: Failure: Drive-letters of multiple CDRom-drive s have to be contiguous.

Can you just load ykhwong's dosbox build with a fresh dosbox.conf (or with a clean autoexec section), and then type at the prompt:

1imgmount d C:\Ripper\RIPPER1.iso C:\Ripper\RIPPER2.iso -t iso

And post me any message you may see as a result.

I followed your instructions with a clean autoexec portion of the dosbox.conf file and the message I get says:

MSCDEX installed.
Drive D is mounted as c:\Ripper\RIPPER1.iso; c:\Ripper\RIPPER2.iso

when I typed in the command dir, it showed the files for Ripper1 disk. When I then hit ctrl + F3 (as suggested), it switched to the other disk. When I play the game, it successfully switches between the two disks.

I think the ctrl + F3 command was what I was missing. Thanks, but why do these commands not work when included in the autoexec portion of the dosbox.conf file?

Good to see it working, but the commands should work in the autoexec section too. I just tried a similar autoexec config like the one you posted, and it worked for me (but with a different game and under linux).

If you just put this single imgmount command as above in the otherwise empty autoexec section, does this work? (You should see the same message.) If not it could be a bug in this build or some bug that only happens on windows.

When I load just one disk on drive D, it works. More than one, it does not. What do you think, ykhwong?

I figured it out! I rearranged things a little as follows:

mount C C:\Ripper
imgmount d c:\ripper1.iso c:\ripper2.iso c:\ripper3.iso c:\ripper4.iso c:\ripper5.iso c:\ripper6.iso -t iso
c:\ripper /v3

This works great. Thanks everyone!

I was busy lately. Glad to hear that.

While I have enjoyed using your dosbox build, I have noticed two problems:

1. The dosbox.conf file seems to repeat every command in the autoexec portion twice.

2. When I exit dosbox, the program freezes and I get the following message:

dosbox.exe has encountered a problem and needs to close. We are sorry for the inconvenience.

Yes, the first one and second one are already reported by someone in my cafe.
I am going to fix them later.