Optical media

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==ISO9660==

==UDF==

An outgrowth of the High Sierra and [[:File:Ecma-119.pdf|ECMA-119 (2nd Edition)]] specifications (the [[:File:Ecma-119e1.pdf|first edition]] wasn't widely implemented, and is useful only for historical value).

===Relaxed 9660===

===Joliet===

A [[:File:Microsoft_Joliet_Spec.pdf|1995 specification]] by Microsoft designed to address ISO9660:1988's shortcomings and restrictions regarding:

* Character set

* File name length (raised to 128 bytes from 30)

* Directory tree depth (eliminated 8-level hierarchy restriction, retains 240 total byte limit)

* Directory name format (raised to 128 bytes from 9660L2's 30, and adds file name extensions)

* Character sets ((almost) complete UCS-2 character set, using big-endian encoding)

Joliet implies use of ISO/IEC 10646 ([[Unicode|UCS-2]]) in file naming, and can be detected by examining an ISO9660 SVD (Supplementary Volume Descriptor, ISO9660 section 8.5.6)'s "Escape Sequences" field for the UCS-2 escape sequences

* <tt>25 2f 40</tt>,

* <tt>25 2f 43</tt>, or

* <tt>25 2f 45</tt>.

The following UCS-2 sequences are not allowed in a Joliet file name:

* All code points between <tt>00 00</tt> and <tt>00 1f</tt> (control sequences)

* <tt>00 2a</tt> (asterisk)

* <tt>00 2f</tt> (forward slash)

* <tt>00 3a</tt> (colon)

* <tt>00 3b</tt> (semicolon)

* <tt>00 3f</tt> (question mark)

* <tt>00 5c</tt> (backslash)

===Rock Ridge===

===El Torito===

A [[:File:ElTorito.pdf|1995 specification]] by IBM and Phoenix for creating bootable ISO9660 CDROM's.

==UDF (ISO 13346)==

Also known as [[:File:Ecma-167.pdf|ECMA-167]], UDF provides for packet-based reading and writing.

==See Also==

* The Linux [http://tldp.org/HOWTO/CDROM-HOWTO/ CD-ROM HOWTO]

* El Torito [http://littlesvr.ca/isomaster/eltoritosuppl.php specification supplement], 2006-09-22

Optical media: Difference between revisions

Dank (talk | contribs)

@@ Line 1: / Line 1: @@
 ==ISO9660==
-==UDF==
+An outgrowth of the High Sierra and [[:File:Ecma-119.pdf|ECMA-119 (2nd Edition)]] specifications (the [[:File:Ecma-119e1.pdf|first edition]] wasn't widely implemented, and is useful only for historical value).
+===Relaxed 9660===
+===Joliet===
+A [[:File:Microsoft_Joliet_Spec.pdf|1995 specification]] by Microsoft designed to address ISO9660:1988's shortcomings and restrictions regarding:
+* Character set
+* File name length (raised to 128 bytes from 30)
+* Directory tree depth (eliminated 8-level hierarchy restriction, retains 240 total byte limit)
+* Directory name format (raised to 128 bytes from 9660L2's 30, and adds file name extensions)
+* Character sets ((almost) complete UCS-2 character set, using big-endian encoding)
+Joliet implies use of ISO/IEC 10646 ([[Unicode|UCS-2]]) in file naming, and can be detected by examining an ISO9660 SVD (Supplementary Volume Descriptor, ISO9660 section 8.5.6)'s "Escape Sequences" field for the UCS-2 escape sequences
+* <tt>25 2f 40</tt>,
+* <tt>25 2f 43</tt>, or
+* <tt>25 2f 45</tt>.
+The following UCS-2 sequences are not allowed in a Joliet file name:
+* All code points between <tt>00 00</tt> and <tt>00 1f</tt> (control sequences)
+* <tt>00 2a</tt> (asterisk)
+* <tt>00 2f</tt> (forward slash)
+* <tt>00 3a</tt> (colon)
+* <tt>00 3b</tt> (semicolon)
+* <tt>00 3f</tt> (question mark)
+* <tt>00 5c</tt> (backslash)
+===Rock Ridge===
+===El Torito===
+A [[:File:ElTorito.pdf|1995 specification]] by IBM and Phoenix for creating bootable ISO9660 CDROM's.
+==UDF (ISO 13346)==
+Also known as [[:File:Ecma-167.pdf|ECMA-167]], UDF provides for packet-based reading and writing.
+==See Also==
+* The Linux [http://tldp.org/HOWTO/CDROM-HOWTO/ CD-ROM HOWTO]
+* El Torito [http://littlesvr.ca/isomaster/eltoritosuppl.php specification supplement], 2006-09-22