Convert Nero *.NRG Files Into The More Common *.ISO Format

If you don't own Nero, here is a solution for Mac and Windows users which will enable you to easily burn the Roland L‑CD1 Image file found at Rutger Verberkmoes' page "Roland L‑CD1 disk image". The file is a Nero DAO (Disc At Once) Image file with 1 session. It's not a standard *.ISO file. It contains Nero specific "garbage" characters at the beginning. A freeware utility called AnyToISO will convert a Nero *.NRG file into the more commonly used *.ISO format. After converting the *.NRG file to *.ISO, you can burn a CD-ROM using commands which are already built-in to Mac OS X (Terminal Window App ‑ hdiutil) or freeware for Windows XP through Windows 10 (Free ISO Burner)

Mac OS X
     Note: If you want to burn a different *.iso file other than the *.nrg Nero file from the link above, start at Step #7 and substitute your own *.iso filename
          ‑ or‑
     skip to the section below titled "BURNING *.MDX, *.ISO, *.BIN and *.CUE SAMPLE LIBRARY FILES TO CD‑ROM"

  1. Download l-cd1-nrg.wav (it's shown as L-CD1.nrg at the top of Rutger's page)

  2. Rename it to and then unzip it (The uncompressed file will be named L-CD1.nrg)

  3. Download and run the free App called -

  4. Click the tab for "File Extract/Convert to ISO" and press the radio button for "Convert To ISO Image"

  5. For "Source image/archive file", click the "Open image" button and select L-CD1.nrg

  6. Click the "Convert!" button and the converted file will be named L-CD1.iso

  7. Copy the new L-CD1.iso file onto the Desktop

  8. Place a blank 700MB CD-R disc into the CD drive (Anything larger will not work)

  9. Open a Terminal window (Applications > Utilities >

  10. At the command prompt type:
    • cd Desktop (press the Return key)
    • hdiutil burn L-CD1.iso (press the Return key)
    • The Terminal window will display the following and after a few minutes of burning
    • and verifying, you will have a new Roland L-CD1 CD-ROM ready to rock;
    • Preparing data for burn.... Opening session.... Opening track
      Writing track ...............................................
      Closing track ...............................................
      Closing session .............................................
      Finishing burn.... Verifying burn.... Verifying .............
      Burn completed successfully .................................
  • Note: You may need to use the "sudo" command in the Terminal window. The syntax would be;
    • cd Desktop (press the Return key)
    • sudo hdiutil burn L-CD1.iso (enter the system password and press the Return key)
Operating System Used To Test Programs Was Mac O/S X (v10.11.4)


I've never been able to get the built-in Windows Disc Image Burner utility to burn *.iso images reliably. I recommend a freeware utility called Free ISO Burner because it's a simple, no frills, stand-alone program which does not require any software installation. It's so portable that you can even run it from a USB flash drive if you want to. It works with Windows XP / 2003 / Vista / Windows 7 / Windows 8 / Windows 10. You can download the program from

* Be sure to use a blank 700MB CD-R disc for burning (Anything larger will not work)
Operating System Used To Test Programs Was Windows 7 (32-Bit)


If you are working on a Linux system... you already know what to do Smiley



I've had some requests from online visitors to explain how to burn S‑Series and W‑Series Sample CD‑ROM's using files downloaded from the Web which contain *.MDX, *.IMG, *.BIN and *.CUE extenders. These files are created by people who have made their own custom sample libraries and/or have copied a direct image of a CD‑ROM to a file for purposes of sharing

Mac Logo

To Burn An *.ISO, *.BIN, *.CUE CD‑ROM On Mac O/S X Version 10.x.x

1) Shutdown computer and restart (optional, but I've found this cuts down on burn errors)
2) Insert a blank CD‑ROM and choose "Ignore" at the pop‑up window
3) Run the BURN App (Freeware:
4) From the four buttons on top, choose "Copy" then click on the Open button at the bottom
5) Choose the *.ISO or *.CUE file (Note: *.CUE file is for use with *.BIN files)
6) Click on the "Burn" button at the bottom
7) At the next pop‑up window, click on the "Burn" button

   * Note: Sometimes the program will verify the burn and other times it will not. I don't know why...

I'm unable to burn *.MDX files on my Mac so I have to use Astroburn Lite (Freeware) on a Windows PC
Astroburn Lite also burns *.ISO, *.CUE and *.BIN CD's without any issues

Windows Logo

To Burn *.MDX To CD‑ROM On Windows PC (XP, Visata, Win7, Win8, Win10)

Use the Astroburn Lite program on a Windows PC (Freeware:
I keep an old Windows PC in the closet for these kinds of things. It's always good to have an old Windows computer around because the Mac can't do everything ;^)
The Astroburn Lite software version used for the following examples to burn *.MDX files was v2.0.0.0204

Click on the IMAGE tab at the top
Click on the MAGNIFYING GLASS to search for the *.MDX file you want to use

Insert a blank CD‑ROM and click on the START BURN button at the bottom


The indicator at the bottom of the screen will show the current burn process


A pop‑up window will indicate success (or failure)
From this point on, the CD-ROM is only readable by a Sampler, not a computer

S-50 / S-550 ZONE