>From: James Pearson <[EMAIL PROTECTED]>

>>I have a nominally ISO9660 CDROM that has a well-formed
>>SUSP System Use area associated with the first entry in
>>the Root Directory.  System Use entries are:
>>
>>     SP
>>     RR
>>     PX
>>     TF
>>     CE
>>
>>I find SP and CE in the SUSP Draft Standard Version 1.12.
>>I find PX and TF in the Rock Ridge Draft Standard Version
>>1.12.  But I don't find RR in either of those or in Apple
>>Technical Note FL36.
>>
>>Can anyone tell me where that RR System Use Entry is
>>specified ?

>I believe RR was in early RRIP specs, but it was not mandatory and
>later dropped. Looking at the Linux source code, I think it's a bit
>flag that defines what other Rock Ridge fields are present.

As with many CD related information, the standard is on:


http://www.fokus.gmd.de/research/cc/glone/employees/joerg.schilling/private/cdr.html



RR is intended to speed up lookup whether a specific feature is present.
Sun skips the information, I don't Know about other OS.

J�rg

 EMail:[EMAIL PROTECTED] (home) J�rg Schilling D-13353 Berlin
       [EMAIL PROTECTED]               (uni)  If you don't have iso-8859-1
       [EMAIL PROTECTED]           (work) chars I am J"org Schilling
 URL:  http://www.fokus.gmd.de/usr/schilling   ftp://ftp.fokus.gmd.de/pub/unix


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