> Are you sure you mean HFS? The original maximum volume size for Mac OS 
> Standard (HFS) format, was 2GB. The maximum number of allocation blocks is 
> 65,536. For a 100GB disk, your allocation block would need to be 1.6MB. 
> Considering Mac OS X 10.7, today's current Apple operating system, is 
> optimized for 4K allocation block sizes, the performance and efficiency of a 
> 1.6MB allocation block would be hideous.

Examining with gparted and Disk Utility, I see an Apple partition label
that designates partitions:

  HFS (not plus)       1 MB  boot
  HFS+ journalled   25.6 GB  Machintosh HD
  ext3              10.6 GB  Fedora root
  swap               1.0 GB

I believe that the plain HFS boot partition was created during
Fedora install.  It's now running MacOS 10.4.11 and Fedora 12,
which are both the latest applicable releases.  Being a PowerPC,
Apple discontinued support beginning with MacOS 10.6 (Snow Leopard)
in spring 2010.

> HFS is dead. I'm not even finding a partition type GUID for it, it was always 
> intended to be used with the APM partitioning scheme (not MDB or GPT).

PowerPC Macintosh hardware will run for some more years.
The monetary cost for a used machine (1GB RAM, >1GHz CPU)
is nearly zero.  A "dead" Apple OS has the benefit of no new bugs.
Preventing the install of Fedora on such a box (if creating a
plain HFS is required for dual boot) seems to be a harsh penalty.

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