>> I had a similar problem recently when I added a new file (and thus a new
>> session) to a regular CDR. Only the new files were readable. I think it
>> is because you can't add new sessions to CDRs. You can only add them to
>> CDRWs (rewritable CDRs). Not 100% sure though.
> 
> I'm pretty sure you can add new sessions to CDRs, but the common practice 
> is to import the previous session first (thus preserving the access 
> information in the TOC on the disc).  If one doesn't do that, then it can 
> appear that data's been lost.

It is, indeed, possible to have multiple sessions on a CD-R. I've done it.

It is also usual to import the previous session. If you don't, Windows 
appears not to be able to "see" the previous data. Note, however, that 
AmigaOS *can*.

I've done this personally. Burn several sessions to a CD, and when you 
insert it, AmigaOS prompts you for which session you want to access. 
(Recall that AmigaOS tracks all disk insert/eject events.) You then see 
the data in the selected session only (and any data it imports).

My Amiga was using a plain ordinary IDE CD-RW drive, so it seems to me 
that a PC should be able to do the same trick, given the correct 
software. It wouldn't surprise me if something like cdparanoia can grab 
an arbitrary session, dump it into an ISO file, and then let you 
loop-mount that to read it...

-- 
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*

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