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Reading multi-session CD-Rs

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MarkBox

Technical User
Apr 17, 2001
46
US
I'm using a CD-R to store backups of critical data from my Sun Ultra-5 running SPARC 8. Writing the first session went well:

cdrw -i -vO backup.iso

the -O leaves the CD open for future sessions. Today, writing the 2nd session also went well using the same command as above. After the 2nd session was written, this command:

cdrw -M

shows the following:

Device : MITSUMI CR-4801TE
Firmware : Rev. 2.01 ( 1.2 2.69809)

Track No. |Type |Start address
----------+--------+-------------
1 |Data |0
2 |Data |51937
Leadout |Data |92710

Last session start address: 51937
Next writable address: 99610

However, when I mount the CD-R I can only see track 1 data (i.e. the first backup set that was written to the CD-R 3 weeks ago). I am unable to see the new data written to track 2 today.

Does anyone know how I can view the 2nd session's data (i.e. track 2)? Is there a utility or command that selects the 2nd session for access? I seem to recall this ability on Windows platforms.

thanks









 
I think you can only read 1st session until all sessions were written (CD close), this seems to be the standard mode of operation according to the CDR manual, in fact, I would hardly call this multi-session recording if you can't read the cdrom until all data is recorded, you can also check CD-Recording FAQ for more info.

Hope this helps,

Regards,

Carlos Almeida.


 
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