There is also a handy little app called "Creator Changer" that works for
fixing type and creator codes.

A little off topic:
I tried to launch Disk Copy 4.2 on my Yosemite with 9.2.2 and 8.5, and
my iMac with Classic. All three report:
"Disk Copy will not run on this kind of Macintosh since certain required
support is not provided"

Anyone know what the problem is? I had thought that this worked at one 
time, but I may be misremembering.

Bill.


On Feb 18, 2009, at 10:04 AM, Ray Arachelian wrote:


Peter wrote:
Amy I doing something fundamentally wrong?

Also, some files are BLAH.archive.hqx.  I know the hqx,
but what format is the archive part?  Is that supposed to
be the extension for a disk image file.


Sadly, yes, though it's not your fault.  Old world Macs have a TYPE and
CREATOR bit of metadata for each file that define what application to
run and what kind of file they are.  These are 32 bit values reresented
as 4 ASCII characters.

If the files were encoded with MacBinaryII or HQX or SIT, UnStuffIt will
be able to set the right types.

Naked Mac files on the web without this data need the data to be fixed,
while files enclosed with MacBinII or BinHex (aka HQX) or StuffIt or
Compactor Pro, or even ZipIt don't since they carry the metadata.

This article describes them:
http://support.apple.com/kb/TA25699?viewlocale=en_US
More here: http://kb.iu.edu/data/aemh.html  and 
http://en.wikipedia.org/wiki/Creator_code

The best thing to do is to drop whatever file you downloaded onto
UnStuffIt incase it has a MacBinary or HQX enclosure, let it deal with
that, and if they're encoded with either of those (or some obscure ones
such as AppleSingle/Double) it'll handle those and you'll see an icon on
the image file.

UnStuffIt will let you drop anything on top of it, and doesn't use the
file type to decide what kind of file it is, so it'll do its best to
extract whatever kind of archive you throw at it and will undo/strip
MacBinII headers and decode HQX, etc.

But for the ones off the web that are just .image or .dart, that UnSit
doesn't do anything with, you may need to reset them manually in order
to get DART and DiskCopy to recognize them.  There's a utility that does
it called FileTyper, there's also ResEdit which can do the same thing.

For Compactor (.cpt) archives use:  'CPCT' as the file type and 'PACT'
as the creator (without the quotes on all of these.)
For StuffIt, use 'SIT5' as the creator and 'SIT!' (or 'SITx') as the
type (there's some version difference there.)
For DiskCopy 4.2, use 'dImg' for the file type and 'dCpy' for the creator
For DART, use 'DART' for the file type and I think the creator is 'DMd2'

FileTyper can be downloaded from here:
http://dazuma.freeshell.org/filetyper/index.html
There's another similar program here, but I've never tried it. 
http://www.frederikseiffert.de/filetype/


see:  http://lisafaq.sunder.net/lisafaq-hw-media-floppy_dc42.html for
the other details.

I should update the FAQ with that info. :-)

And again, when dealing with Lisa DiskCopy disks, *ALWAYS* use Disk Copy
4.2, never any newer version or they'll fail to work properly.

Good luck.





"Decide what you want, decide what you are willing to exchange for it.
Establish your priorities and go to work." -- H.L. Hunt





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