On Sep 10, 2012, at 10:59 PM, openbios-request@openbios.org wrote:

Message: 7
Date: Sun, 09 Sep 2012 23:33:13 +0100
From: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
To: The OpenBIOS Mailinglist <openbios@openbios.org>
Subject: Re: [OpenBIOS] Viewing files on HFS volume
Message-ID: <504D1929.3050107@ilande.co.uk>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

On 06/09/12 13:47, Programmingkid wrote:

I am trying to open a Macintosh CD in OpenBIOS. When I use this command to view the files: dir cd:\, I receive an error message stating that mac-parts could not determine the file system on the disc. Has any one been able to view files on a HFS disc?

IIRC there was a bug reported in the HFS partition calculation code in 
OpenBIOS (possibly my fault after some refactoring?). It shouldn't be 
too difficult to fix, but if you're struggling then I don't mind taking 
a look if you can supply a test image.

Here is the test image you requested. It is a CD image I created in Disk Utility. I couldn't make a HFS volume, so I had to settle with an HFS+ volume. I did test it out and QEMU gave me the same error I saw with an Apple supplied CD.

Thanks for helping.