Re: Sweet16

[Steven Nelson <steven-nelson@uiowa.edu>]

On May 29, 8:55 pm, gids...@sasktel.net wrote:
> > I am not quite following your logic.  I have two images created with
> > Disk Utility, one 32MB, one 40MB.  Get info returns the correct size
> > (bytes) for both.  32*1024^2=33,554,432 bytes=32MB.
> > 40*1024^2=41,943,040 bytes=40MB.
> > I do know that a Sweet16 32MB image is slighty smaller (don't have one
> > created at the moment to check).  I figured that Sweet16 is a block or
> > two shorter because it is initially created with a ProDOS format and
> > IIRC that is just shy of the full 32MB.
>
> > My 40MB disk works with both Sweet16 and OSX.  The 32MB mounts only in
> > OSX.  GS/OS can't recognize and asks to reformat.  If I reformat in GS/
> > OS, OSX can't mount image.  Catch 22.
>
> You created the 32 MB disk image using the "custom" option in the
> "volume size" menu, correct?
> Once the disk image has been created, on the left hand side in disk
> utility, you should see the .dmg file and indented just below it is
> the volume for that disk image.  click on the .dmg file first and
> check the Total Capacity at the bottom middle of the window.  Next,
> click on the volume name, and again check the capacity.  These should
> be equal.
>
> Whenever I create a custom image, the sizes do not match.  I am unable
> to use that disk with Sweet 16.  With the preselects in the "volume
> size" menu, both sizes match and are useable with Sweet 16.
>
> Hope that is clearer.
>
> rob

Ok, I did some more digging - kind of.  Using KEGS instead of Sweet16.

KEGS will mount my 40MB and 32MB HFS images.  The 40MB is standard -
just give KEGS the file image name.
eg, s7d9 = /Users/snelson/Desktop/Sweet40.dmg

The 32MB requires a partition name as well.  The config menu offers /
Apple and /Apple_HFS_Untitled_1  (or something like that) so to mount
the 32MB image I need to give partition as well

eg, s7d10 = :Apple_HFS_Untitled_1:/Users/snelson/Desktop/Sweet32.dmg

So, the partitions explain the difference in image and volume
capacities.

Eric, how does Sweet16 account for the difference in partitioning of
the .dmg files?  Could this 'feature' of .dmg files be confusing
Sweet16?

  --Steve