[rescue] Writing .DMG images

Geoffrey S. Mendelson gsm at mendelson.com
Mon Dec 12 07:31:26 CST 2005

On Mon, Dec 12, 2005 at 07:58:15AM -0500, Phil Stracchino wrote:
> Question for the Mac-literate:  If I have a .DMG disk image, but no
> currently-bootable Mac (and no Mac at all with a CD burner), how do I
> get that image burned to a CD?  Can anything on the PC side read .DMG
> images?

No. The .DMG format uses a proprietary compression algortyhm. AFIK there
is no way to read it on a PC and I have tried. With that said, it's
worth trying to burn it as if it's an ISO image. Uncompressed .DMG files
are just raw images. It's a 50/50 chance the one you have is uncompressed.

Note that there is no Apple software to burn from .DMG files EXCEPT under OS X.
I think that the last version of OS9 toast will burn from them, but
I don't have it.

If you have access at all to a Mac with OS X, you can use the disk utility
to convert a compressed DMG file to a "CD/DVD master" (ISO) file you
can burn on a PC.

I had to do that once, with a 100mb network it wasn't too painfull.

Geoffrey S. Mendelson, Jerusalem, Israel gsm at mendelson.com  N3OWJ/4X1GM
IL Voice: (07)-7424-1667  IL Fax: 972-2-648-1443 U.S. Voice: 1-215-821-1838 
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