This page is a wiki. Please login or create an account to begin editing.

Virtual CD/DVD-ROM Utility

Your rating: None Average: 4.7 (18 votes)
Year released:

[www].se [ftp].se [mirror].us [mirror].de
VirtualCD_Imager_v1.0d0.sit (23.74 KB)
MD5: 16d676fb01ffb3843ac6644b92f96302
For System 7.0 - 7.6 - Mac OS 9
[www].se [ftp].se [mirror].us [mirror].de
virtualcd-imager-mod-img.sit (53.49 KB)
MD5: b4967c78c44e6e4ca9836ceafa0433f2
For System 7.0 - 7.6 - Mac OS 9
[www].se [ftp].se [mirror].us [mirror].de
virtual-cd-dvd-ute-10d3.sit (150.73 KB)
MD5: a84a05d7f4329a25fab61a30afce10e4
For System 7.0 - 7.6 - Mac OS 9
[www].se [ftp].se [mirror].us [mirror].de
Alt_VirtualCDTyper.sit (17.61 KB)
MD5: 871b850b881286c297af1ea7874aef98
For System 7.0 - 7.6 - Mac OS 9
This app works with: SheepShaver, Basilisk II,

The Virtual CD/DVD-ROM Utility is a tool to aid mounting a CD/DVD ROM image file onto the desktop of a classic Mac OS. - The kind of image file types it can mount, may be .CDR, .DSK, .IMG (Disk Copy 6 .ISO compatible), .ISO, .TOAST, etc.

An image file once mounted by the Virtual CD/DVD-ROM Utility, can often be used to fool application installers and games programs that require a physical CD/DVD to be inserted, i.e.; to accept a virtual mounted image as being the expected genuine hardware copy.

It can also be used to create .ISO compatible image files labeled ".iso", from mounted media such as CD or DVD-ROM, or from CD and DVD image files mounted by other software such as Disk Copy or Toast, etc.

For a full list of v1.0d3 changes view the enclosed "ReadMe" docs (in SimpleText & PDF formats).

Architecture: 68k

68k code only, 68020 CPU or better. Possibly could run on 68000 CPU but requires 4MB or more RAM to load. Runs flawlessly on all PPC Macs capable of running under a classic Mac OS. This utility does not work in the Classic environment of Mac OS X

System Requirements:



Captain_Obvious's picture
by Captain_Obvious - 2020, August 8 - 8:02am

I've made a couple of tweaks to the auto-typer that I think makes it a little safer to use:

1. Changed the "examiner" to only respond to files with filenames ending in ".iso". This way, there's less chance of accidentally whacking the type/creator codes of non-diskimage files.

2. Changed the "changer" to also set the locked flag of the file. It's cool that Virtual CD/DVD-ROM Utility always mounts images read only, but the file might be used with another program that isn't as mindful and courteous.

3. To avoid confusion and accidentally overwriting the original file, I also changed the name of this version to "Virtual CD Typer".

I made these changes because I prefer utilities that err on the side of safety for the user, and any inconvenience to the user is very minimal: Make sure the image filename ends in .iso. If you really want to modify the image file, just unlock it in the Get Info window.

The idea is to require actions that are very deliberate, yet simple and easy, if you want to forego something that helps keep your files safe. Not everyone might want to do things that way, it's just how I like to have my Mac set up and I thought it might be helpful to anyone else out there who's like me.

If you prefer this kind of autotyper, I've uploaded it as "Alt_VirtualCDTyper.sit".

MikeTomTom's picture
by MikeTomTom - 2018, April 1 - 1:25am

You won't have this problem with every image it creates, but there might some failures.
Try this as a workaround on problem images that it cannot mount, even for one's it creates itself:

Use Toast to mount the image. Make sure to lock the image before using Toast to mount the image otherwise the Finder will write to the image stuffing you chances of this working. So if the image you've already created was previously mounted unlocked with Toast, then you have to start over with an original image, either ripped from the original CD/DVD or an image you've DL'd.

When you have the original image locked & mounted with Toast, use the Virtual Utility to create an image from the Toast mounted image on your desktop.

No guarantees this will work for you, but it has worked for me in the past.

madalynmcworm's picture
by madalynmcworm - 2018, March 31 - 5:19pm

I made two images this morning with Virtual CD/DVD-ROM Utility and with Toast. They end up being the exact same size, which seems reasonable. The toast files made with Toast mount in both Toast and Virtual CD/DVD-ROM Utility. The ISO files made with Virtual CD/DVD-ROM Utility mount under toast, but not Virtual CD/DVD-ROM Utility; I get the error about not enough resources.

It mounted other images properly, just not the two it made.

24bit's picture
by 24bit - 2017, August 2 - 9:29pm

Yes, I tried a similar thing some time ago on an Android tablet. No way.
I think that like with many Mac apps (not all though) files need to be on a HFS(+) file system to work properly.

pl212's picture
by pl212 - 2017, August 2 - 8:28pm

Has anyone sucessfully mounted an ISO from a network volume? I get an unexpectedly quit / type 4 error when trying to do so, with a known-good image (that is, it mounts when copied to the local hard drive.)

MikeTomTom's picture
by MikeTomTom - 2015, April 27 - 7:35am

@reukiodo: [1] No other extensions required. I can't replicate it as not working here, so I can't say why rebuilding the desktop doesn't get it to work for you.

You could try "FileTyper" to create your own AutoTyper droplet app. I think I used an earlier version of FileTyper to create the AutoTyper here but it works OK for me under Mac OS's 7.1 to 9.2.2. - If you do try FileTyper to create your own AutoTyper app; Virtual CD/DVD Utility disk images have the Creator Type: VCDM and the File Type: GImg (both types are case-sensitive).

Also; the FileTyper FAQ page has a paragraph entitled "FileTyper won't highlight when I drag something onto it! What's going on?" Which may (or may not) be helpful.

[2] 'There are insufficient resources to mount this image' is the very poor error message the utility gives to any image file it cannot mount for whatever reason. I agree, this error message is less than descriptive.

Other than re-building an image-file into a form it can mount without error, there's not much else that can be done to avoid or improve on that message. Unless the source-code becomes available and we can make some internal changes to this software's code, it will remain "as is". As yet there is no real clue as to who originally created this program, except for the ripping code which I assume was sourced from an earlier version of Coyote's DVDExtractor software...

reukiodo's picture
by reukiodo - 2015, April 26 - 10:09am

Is there any other extension needed to use the auto typer? My macs still don't allow me to drop any files on it or an alias to it after rebuilding the Desktop...

Also, what is the real solution to the 'There are insufficient resources to mount this image' when there is 1GB of RAM available (after a reboot) ? I think this error message isn't descriptive of what the real underlying problem is...

MikeTomTom's picture
by MikeTomTom - 2014, March 1 - 10:57pm

Looking at whats built into this utility (using ResEdit), I noticed that it has an earlier version of Coyote's "DVD Extractor" built-in to it, plus a bunch of "to be enabled at some later stage" menu commands and options.

The upshot is, the Virtual CD/DVD-ROM Utility can make quite a nice rip of DVD movies (under Mac OS 9.x). Then by using the included "Virtual CD AutoTyper" to make the resulting image auto-mount by double-clicking, the Virtual CD/DVD utility mounts the image then exits & Apple DVD Player detects a mounted movie DVD, launches and begins to auto-play the movie. Nice.

Downside is, it doesn't shrink the DVD movie to single-side DVD size & modern DVD protection can cause it to fail.

MikeTomTom's picture
by MikeTomTom - 2013, October 4 - 2:12pm

Discovery of the day: This thing will mount DiskDup+ images!

Discovery of the day: This thing will mount Disk Copy 6.x, 1.4 MB & 800k images if they've been saved as floppy disk image files. - Disk Copy gives a choice when saving a floppy disk to image file, as floppy disk image or a given file size e.g. 1440KB as opposed to 1.4MB floppy disk image. The floppy disk image option is "disk compatible" and will mount using this utility.

IIGS_User's picture
by IIGS_User - 2012, July 3 - 3:47pm

Like unzipping on Windows, you need to unstuff .sit files on the Mac, using Stuffit Expander.

Claytonofbricks's picture
by Claytonofbricks - 2012, July 3 - 3:15pm

Not sure what I'm doing wrong here but every time I try to open this I get an error message that says:

The document "VirtualCD_Imager_v1.0d0.sit" could not be opened, because the application program that created it could not be found.

Any help here would be greatly appreciated. I don't have much experience with Mac OS Classic so I'm sorry if this is just something stupid I'm doing wrong. =\

MikeTomTom's picture
by MikeTomTom - 2012, June 30 - 2:37pm

BTW: Ignore the implied (.ati message) and click the top button labeled "Mount Toast .ati file as Virtual DVD ROM" then use its dialog to locate your CD or DVD, .ISO, .Toast, .CDR etc, media image file to mount it onto your desktop. As long as the image file is an image of some CD/DVD type in good working order (can be burned to CD/DVD OK) it will mount.

This utility works for me in Mac SSW 7.1.1 or later (I haven't tried it in earlier Mac OS's). Some version of QuickTime may need to be installed also?

Thundersock's picture
by Thundersock - 2010, October 17 - 6:45pm

Thanks, I think this happened to me, and I couldn't figure it out.

Attila's picture
by Attila - 2010, February 21 - 2:10am

"tried creating disk images using the utility for one of my games" I'd be careful about using this to make images; I don't think it is as thorough and compatible in that respect as Toast is. It is awesome at mounting them, though.

Dragnerok X's picture
by Dragnerok X - 2010, February 20 - 9:26pm

Just found a workaround: using IE's File Handling area, I noticed that this application handles files which have "VCDM" as their file creator. So I opened up good old resedit, and needless to say both disk images recently created with the program listed "CDr3" as their creator. So, I changed the creator information, saved my changes, and both images mounted without a hitch.

Dragnerok X's picture
by Dragnerok X - 2010, February 20 - 9:07pm

Basically, I'm in Mac OS 9.2.2 on my iBook G3, and tried creating disk images using the utility for one of my games (Starcraft). While they mount fine using drag-and-drop, I'd like to set up an extension binding so that I can write a script in Applescript to automatically mount the images and start the game.

bertyboy's picture
by bertyboy - 2010, February 20 - 8:54pm

Internet Explorer Prefs ?

Had a nice feature for handling downloaded files based on MIME type. Sure I've mentioned all this before. It basically updated the core "Internet Preferences" and set a file type and more importantly creator for each file type downloaded. Even though the preference was set in IE, it was reflected in all downloaded files. IE made it easy by letting you choose the app that the file should be opened in.
You'd just have to scroll through the long list of file types, or add a new one based on filename extension.

If you're in OSX (but you said File Exchange CP) then it's a different matter. Even OSX gets it wrong some time, I have .toast files appearing as Disk Utiility documents, only when I perform a Get Info does it correct the icon and launched app.

Dragnerok X's picture
by Dragnerok X - 2010, February 20 - 8:34pm

I've been running into some trouble myself getting the file exchange control panel to map .toast and .ati files to this program. Any suggestions?

Attila's picture
by Attila - 2010, February 20 - 3:38pm

Best way with this program (or any when dealing with files downloaded recently) is to open the application and use the file menu to select what you want to open, or in the case of this program, hit the big "Mount toast file..." button. Often files that you just downloaded have lost their filetype and creator information in transit, or the application you want to use them with isn't already mapped to their filetype.

Also, I keep an alias for frequently used programs like StuffIt Expander and DiskCopy or Toast on my desktop to make it easy for drag-and-drop.

SwedeBear's picture
by SwedeBear - 2010, February 20 - 1:25pm

To be certain; use drag-and-drop! Simply drag your image overthe icon of the application and drop it ontop of the icon. If the application recognizes it, it will open it, or at least try to.
I´ve only run Virtual DVD-ROM/CD Utility under emulation so far, but the application works up to 9.0.4 and also in my emulated 8.6.

Akurn's picture
by Akurn - 2010, February 19 - 10:04pm

So If I download this app on my old iMac OS 8.6, and double-click the .toast file, it should open the game?

Attila's picture
by Attila - 2010, January 16 - 4:41pm

Discovery of the day: This thing will mount DiskDup+ images!

grawlix.computing's picture
by grawlix.computing - 2009, July 22 - 9:01pm

Ah, I see. I was under the misapprehension that you had the original disc.

SwedeBear's picture
by SwedeBear - 2009, July 22 - 7:33pm

And that´s the culprit here; what I got and uploaded is an image. Originally from the great HL-era but nevertheless a copy! So that´s my ranting about the uncertainity of content, file- and disk names etc as I don´t have a original disk. But if this still is interesting to work with, I´ll up any of the two versions I produced. Smile

grawlix.computing's picture
by grawlix.computing - 2009, July 22 - 3:18pm

I think the best bet would be a Toast image made directly from the disc. In fact, if there's some sort of sector-by-sector copy option it would be worth trying that.

SwedeBear's picture
by SwedeBear - 2009, July 22 - 12:01pm

It doesn´t make any sense ImHO, as the the image I have originally is a .IMG in HFS+ and that can be copied in OSX (my work and every-day system). However I´ve made a Toast image in HFS where I copied everything onto from my original IMG but this wasn´t recognized as CD-ROM by the game either. Any of these two images can upped if it´s of any use or for further investigation. Please state which one! Wink

grawlix.computing's picture
by grawlix.computing - 2009, July 22 - 5:07am

I should clarify: I'm specifically asking SwedeBear to make a disc image, as the one that's in the archive is (as I understand it) not adequate for actually playing Icebreaker. You can make an install from it, but it cannot be used to burn a disc that is validated by the copy protection.

MacWise's picture
by MacWise - 2009, July 22 - 4:54am

Don't see why not.

grawlix.computing's picture
by grawlix.computing - 2009, July 22 - 4:22am

Can you use it to make an image for Icebreaker?

SwedeBear's picture
by SwedeBear - 2009, July 21 - 8:53pm

And it seems to 'fool' the OS more efficiently than Disk Copy or ShrinkWrap when mounting images!

Attila's picture
by Attila - 2009, July 21 - 6:50pm

This is really a handy little program; can't believe I didn't hear about it before!

SwedeBear's picture
by SwedeBear - 2009, July 18 - 12:51pm

Well, me also. But it works like a charm even with images from Toast 9 mounting in OS 8! Smile
Edit: eh, just struck me; ATI: Adaptec Toast Image…

IIGS_User's picture
by IIGS_User - 2009, July 17 - 6:05pm

Me, too.

MacWise's picture
by MacWise - 2009, July 17 - 4:51pm

I've always throught the extension for Toast files was .toast