Mac has always youed a two fork file system a File is actually made up of two files locked together. A resource fork this tells the Mac which Application is supposed to open the File. Andthe Data Fork which as it states contains the Data.
This was and is still the reason why its difficult to create a virus that seriously affect a Mac File. In most cases on OS9 all you needed to do to get rid of what viruses out there for Mac was simply rebuild the desktop.
But, it cause minor problems when sent to PC people becase they receive two files. If they open one they see gebrish (the Resource file). Then if they open the open the other The see the Data. In the older days Word used the the resource fork to keep the formatting and line breaks. So if you openned the Data forks you might have to reformat and re add line breaks.
AppleDouble was designed to merge the two files into one Data fork that PCer's could use.
OSX still uses the same system but now only pointers to what application is used to open the file is in there. So The Data fork contains everything the PCer needs to open and view Mac file.
David McQueen wrote:
I have seen strange things with the built in archiving for OS X. Decompressing on a classic os machine leaves three folders:
An enclosing folder OSX folder Another folder
and two files one in the OSX folder and one in the other folder.
I have not explored it so I do not know if it is just something local to this particular machine OSX 10.3.4 then OS X .3.8
Decompressing on windows does not appear to be a problem from what I can see.
HTH
Dave McQueen
> In the FWIW department, XP's built-in zip handling is SLOW. I mean,
really, really slow.
Not for me. Routinely zip up multi megabyte files.
Take care with OSX archiving as it is a proprietary format which I do not think works when you try to decompress under another OS !
Works for me daily between OS X (10.3.8) and Windows XP Pro.
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