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I bought an original iMac at a rummage sale today, running Mac OS 8.6, PowerPC G3, 333mhz.

I have two classic Mac games in Mac format on a Windows 7 PC that I am trying to transfer to the iMac. One of the games is an image file in DMG format, which I have converted to ISO, and burnt to CD-R.

When I examine the CD-R on another Windows 7 machine, the files are intact. But when I insert into the iMac, I get the error "The disc is unreadable by this computer. Would you like to initialize the disc?" with two buttons, Initialize (format) or Eject.

I burned at 48x write speed, using MODE 1. The disc itself is a 700 mb Memorex.

I originally was to transfer the files over the internet, but there is no wi-fi support on the iMac and it's too far to hardwire via ethernet to my router.

Any ideas or suggestions welcome.

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1 Answer 1

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You need to burn a hybrid disc with both ISO9660 (and Joliet, Rock Ridge, etc.) and HFS directories.

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  • Thank you, do you know off-hand a burning solution that can do this? I used Windows built-in to burn the first disc and as I'm sure you're aware, no such options are available.
    – Patrick Moore
    Aug 5, 2012 at 21:42
  • Unfortunately no. But I can tell you that anything built-in is unlikely to support this.
    – Ignacio Vazquez-Abrams
    Aug 5, 2012 at 21:42
  • Thanks, +1 and closed. For others with this problem, the freeware ImgBurn for Windows was able to burn a hybrid disc as suggested. imgburn.com
    – Patrick Moore
    Aug 5, 2012 at 21:53
  • @SetSailMedia When you find that the answer provided is just short of what you need, and a little more research is needed, you can add the found results to the answer by editing the answer with the details you found.
    – killermist
    Aug 6, 2012 at 3:26

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