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 Topic: Sound file to floppy retrieval problems (Page 1 of 1)
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  ropie (Profile)
  4 MB
 
Posted: Thu Feb 25, 2010 8:28 am
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Hi,

My first post here. I have been using System 7 on and off for a few years now as I still love the simplicity of the interface. I find it great for simple word processing.

I have it installed on my Macbook Pro running under mini vMac. However, recently I revived my dad's old Macintosh Classic from '91, which still works beautifully, and discovered some old sound files on there that I recorded way back when.

Fortunately the floppy drive still works and I was able to copy the files to disk and transfer them to Ubuntu (as this is the only other machine I have with a floppy drive). The problem is that when I look at the files on the disk under Ubuntu I am told they contain 0 bytes, no data, nada. Looking at the properties of the whole floppy disk shows me that it is full but looking at the files individually reveals no data.

I'm fairly sure this is a Mac issue and not a Linux one as I tried copying over some text files from the Mac with the same floppy and these work fine in Ubuntu.

What's going on here - am I copying them incorrectly? Sorry for the lengthy post for a simple issue. Hope someone can help.. Smile
  
  wove (Profile)
  Moderator
 
Posted: Thu Feb 25, 2010 9:10 am
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Mac files contain a resource fork and a data fork. Linux is unable to read the resource fork, which results in an unsuccessful copy. If you zip the files before you move them over you will be able to copy the entire contents of the file.

You do not run into this problem with text files, because all the necessary text data is contained in the data fork of the Mac file, which is the part of the Mac file that Linux sees. In the case of sound files all the data is contained in the resource fork, which is invisible to Linux. When you are working in an emulator, the emulator keeps track of the different forks for you.

Linux of course could have problems playing a Mac sound file anyway depending on the format. System sounds are stored as a "snd" resource and I doubt that Linux would have any idea what to do with the data. You may need to convert any Mac sound files to a format that can be understood by Linux. Wav files are pretty universal and there are Mac utilities to convert Mac sounds to the wav format.

bill
  
  ropie (Profile)
  4 MB
 
Posted: Thu Feb 25, 2010 10:09 am
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Hi Bill, thanks for the response and the explanations.

wove wrote:

If you zip the files before you move them over you will be able to copy the entire contents of the file.


Is this possible on 7.0.1?

Quote:

Linux of course could have problems playing a Mac sound file anyway depending on the format.


Linux is just the mediator for taking the files off of the floppy. They will end up on my MBP eventually.

Piero
  
  wove (Profile)
  Moderator
 
Posted: Thu Feb 25, 2010 10:31 am
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I believe that Stuffit will create zip files even an older version for System 7.0.1.

If you are simply transferring files through a Linux box and do not intend to use them with Linux, then all you need is a format that can be used with both System 7.0.1 and with OS X. Stuffit is available for both OS X and OS 7, so it should work. BinHex is another common format. It is not a compression format, but does combine the data and resource forks of a Mac file, which allows the file to be stored on systems using a non Mac OS file system, which out any loss.

bill
  
  ropie (Profile)
  4 MB
 
Posted: Sat Feb 27, 2010 6:27 am
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Thanks for the help so far but I can't get the Mac to install the stuffit programme. I have tried several versions (including the stuffit55.hqx available here and some earlier versions) but each time I get the old 'the application program that created it could not be found' message.

If I could, I would just play the damn sounds on the Mac and record them using a mic, but there seems to be a problem with the sound card as even at full volume they are barely audible. Even running a pair of external computer speakers with built in preamp doesn't raise the volume up much.

I'm about to give up on this Sad
  
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