The following project may be of interest to some forum members here. Certainly, the expertise to assist me in completing the project almost certainly resides here. Thus, please let me express this concept, my goal with it, and the research and progress I have made so far.
To create a multisession CD containing 1 audio session, 1 PC data session and 1 Mac HFS+ session, using a PC to do all of the creation.
Globally usable multimedia CD program productions and presentations.
I must say that I know this goal is quite easily achievable if the creation process is being done on a Mac. However, I don’t have one and I am keen to find out if I can make it happen on a PC.
First up, a quick summary of where I’m up to.
I create an audio CD with 5 tracks and leave the disc ‘open’.
I create a Hybrid .iso file separately using a brilliant application called MacImage. MacImage is commercial software, however the trial is adequate for my project, because the .iso image I create does not exceed the trial limit size - neat. What MacImage does is enable me to create this hybrid.iso image which contains a PC ‘view’ and a Mac ‘view’ - meaning (as I understand it) that there are 2 separate file system views embedded in the .iso image.
My Hybrid.iso image on the PC ‘view’ contains an autorun application which will launch a menu etc…
The Mac ‘view’ just has data file and folders and no autorun because that procedure is not supported in OSX.
How does one ‘dock’ a Hybrid.iso image to an open audio CD disc?
Author of MacImage contacted. He believes he did it once before but cannot remember how. He is considering the idea of implementing this concept for future releases of his application, but it’s not a priority.
Venturing out into the world of open source, I did massive research into using mkisofs and cdrecord. After trying this combination of apps (using cygwin1.dll) with many different approaches to the problem and many variations on command line switches (including following specific instructions written by Jorg Schilling on how to append an .iso image to an open disc) , so far I haven’t been 100% successful. After appending the hybrid.iso image to the open disc, the PC ‘view’ works fine but the HFS+ file system always gets lost. So no Mac session appears when the disc is put into a Mac (offsite - belongs to a colleague). Jorg’s procedure involves converting the hybrid.iso to hybrid.raw. Maybe this is where the problem lies.
Step 3 was to write an email asking for assistance from Jorg Schilling. As I half expected…no response.
Step 4 is to call upon internet forums.
Who can think of a way to augment this process or maybe even dream up a better way to do it?
On a further note: I went through a multitude of applications to see if any would support such a process: Nero, Gear, CDBurnerXP, every open source burning app imaginable etc… No dice.
I figure the main trick here involves somehow editing the session start data of my hybrid.iso in order to offset it to the end of the previous audio session. This way the burning application will know where to start burning this new session.
I know how to find out the place at which to offset the start to. This is done with
cdrecord -dev=1,0,0 -msinfo
Whamo! Gives the start and end point of first (audio session).
So, how can one edit the hybrid.iso (session 2) - so that the start of session 2 is offset to the end of session 1 correctly?
I tried converting the hybrid.iso to hybrid.nrg for Nero, and then some persistence trying to fool Nero into burning it…no go I’m afraid.
The closest was Plextools Pro. At least it had a go before crashing out with an error. A good enough go to make me a new coaster at least.
I’ve Googled .iso and .nrg session offset start editing to the max…not getting any decent info there…
Anyone got any ideas?
I put it out there for now…
Thanks for reading this far