On Dec 30, 2003, at 7:34 PM, Harry Jacobson-Beyer asked:

> Whenever I write a session on a CD re-writable it creates an icon. If
> I've recorded three different sessions on the CD, when I insert the CD
> into the drive three separate icons, one for each session, show up on 
> the
> desktop.

Perhaps, depending on the hardware and software you use.

You are creating multi-volume CDs. These contain several writing 
sessions stored as separate volumes, meaning each has its own 
directory.

Some software, such as Toast Titanium and CDRecord, can create 
multi-session CDs, which appear to the reader to contain only one 
directory, but can be written in several sessions. These will give only 
one icon.

Not every recorder can burn multi-session disks, but all can burn 
multi-volume disks. Not all CD-ROM software drivers can interpret them 
properly and not all drives can read them. Older Apple and Windows 
CD-ROM drivers seem to see only the first session. They work okay with 
X.

You can't make a multi-session CD with standard Macintosh format 
(HFS/HFS+). You can make one with ISO-9660 format, which is the 
standard cross platform format for CDs.

I've written such disks, and they aren't worth the nuisance to create, 
unless there's a really good reason.

> Is there a limit to the number of sessions I can write on one CD? Other
> than the data limit of the CD?

Theoretically, no. But, not all drives and drivers can handle the 
really complicated directories when you get lots of sessions.



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