Packet writing is an optical disc recording technology used to allow writeable CD and DVD media to be used in a similar manner to a floppy disk. Packet writing allows the user to access the contents of a CD-R or CD-RW disc directly through a mounted filesystem (Unix, Linux, Mac OS X) or drive letter (Windows). Without packet writing software, one would have to use regular CD mastering recording software to burn a whole disc. In computing, optical disc authoring, including CD authoring and DVD authoring, known often as burning, is the process of recording source material—video, audio or other data—onto an optical disc (compact disc or DVD). ... The optical lens of a compact disc drive. ... It has been suggested that ISO image be merged into this article or section. ... A CD recorder drive. ... Optical disc authoring software is computer software for authoring optical discs including CD-ROMs and DVDs. ... CD and DVD recorders for authoring optical discs such as CD-ROMs and DVDs have a history of various technologies. ... In optical disc authoring, there are multiple modes for recording, including Disc-At-Once, Track-At-Once, and Session-At-Once. ... This article or section does not cite its references or sources. ... This article or section does not cite its references or sources. ... The CD-ROM (an abbreviation for Compact Disc Read-Only Memory (ROM)) is a non-volatile optical data storage medium using the same physical format as audio compact discs, readable by a computer with a CD-ROM drive. ... This article or section does not adequately cite its references or sources. ... Compact Disc ReWritable (CD-RW) is a rewritable optical disc format. ... See also IBMs VM operating system family, where minidisk refers to a logical unit of storage. ... DVD (commonly known as Digital Versatile Disc or Digital Video Disc) is an optical disc storage media format that can be used for data storage, including movies with high video and sound quality. ... A DVD+R disc The title given to this article is incorrect due to technical limitations. ... DVD-R DL (Dual Layer) (Also Known as DVD-R9) is a derivative of the DVD-R format standard. ... This article or section does not cite its references or sources. ... DVD+R DL (Double Layer), also known as DVD+R9, is a derivative of the DVD+R format created by the DVD+RW Alliance. ... The title given to this article is incorrect due to technical limitations. ... This article or section does not cite its references or sources. ... This article or section does not cite its references or sources. ... You can recognize a DVD-RAM immediately because visually there are lots of little rectangles distributed on the surface of the data carrier. ... A Blu-ray Disc (also called BD) is a high-density optical disc format for the storage of digital media, including high-definition video. ... This article or section does not adequately cite its references or sources. ... HD-DVD disc HD DVD (for High Density Digital Versatile Disc) is a digital optical media format which is being developed as one standard for high-definition DVD. HD DVD is similar to the competing Blu-ray Disc, which also uses the same CD sized (120 mm diameter) optical data... HD DVD-R is the writable disc variant of HD DVD, and is now currently available with a single-layer capacity of 15GB. Currently, HD DVD-R has slower write speeds than the competing BD-R format (1–2x vs 1–4x) and lower storage capacity. ... An example of proposed HD DVD-RAM media. ... Ultra Density Optical (UDO) is a next-generation optical disc format designed for high-density storage of high-definition video and data. ... A UMD The Universal Media Disc (UMD) is an optical disc medium developed by Sony for use on the PlayStation Portable. ... The Rainbow Books are a collection of standards defining the allowed formats of Compact Discs. ... ISO 9660, a standard published by the International Organization for Standardization, defines a file system for CD-ROM media. ... Joliet is the name of an extension to the ISO 9660 file system. ... The Rock Ridge Interchange Protocol (RRIP, IEEE P1282) is an extension to the ISO 9660 volume format which adds POSIX file system semantics. ... The Rock Ridge Interchange Protocol (RRIP, IEEE P1282) is an extension to the ISO 9660 volume format which adds POSIX file system semantics. ... The El Torito Bootable CD Specification is an extension to the ISO 9660 CD-ROM specification. ... Overview Apple Macintosh computers use the HFS (or HFS+) file system on hard disks, mainly. ... The Universal Disk Format (UDF) is a format specification of a file system for storing files on optical media. ... The Mount Rainier logo Mount Rainier is a format for re-writable optical discs which provides for packet writing and defect management. ... CD and DVD recorders for authoring optical discs such as CD-ROMs and DVDs have a history of various technologies. ... A floppy disk is a data storage device that is composed of a disk of thin, flexible (floppy) magnetic storage medium encased in a square or rectangular plastic shell. ...

Packet writing can be used both with once-writeable media such as CD-R, DVD+R and DVD-R, and also with rewriteable media such as CD-RW, DVD+RW and DVD-RW. Once-writeable media cannot however recover space once used; A deleted file does not free space on the disk, and a modified or overwritten file occupies additional space even if the file size has not increased. When the free space on a once-writeable disk is exhausted, no further update to the disk is possible. Rewriteable (RW) media can have all the files deleted on a formatted disc, or information can be overwritten. The downside is CD-RW will fade to the point it isn't readable as the re-crystalized alloy de-crystalizes. Formatted CD-RWs seem to fade out faster than unformatted CD-RWs. People who assume RW media can be updated and reformatted many times just like a floppy disk eventually discover that their data has disappeared. And there are only so many times it can be completely erased and reused - it varies from disc to disc, and can vary with age and use. This article or section does not adequately cite its references or sources. ... A DVD+R disc The title of this article is incorrect due to technical limitations. ... A DVD+R disc The title given to this article is incorrect due to technical limitations. ... Compact Disc ReWritable (CD-RW) is a rewritable optical disc format. ... A DVD+RW is a rewritable optical disc with equal storage capacity to a DVD+R, typically 4. ... The title given to this article is incorrect due to technical limitations. ...

Several competing and incompatible packet writing disk formats have been developed, notably those of Roxio Drag-To-Disc (formerly DirectCD), Nero AG InCD, and Sonic Solutions Drive Letter Access. Proposed standards include UDF 1.5 and Mount Rainier. Roxio is a division and brand of Sonic Solutions. ... DirectCD is packet writing software, originally from Adaptec and now supported by Roxio. ... Nero AG is a German software company based in Karlsbad, Germany. ... InCD is packet writing software by Nero AG for Microsoft Windows. ... Sonic Solutions NASDAQ: SNIC is a Novato, CA (California, USA) based digital media company. ... Drive Letter Access (DLA) is a commercial technology for the Microsoft Windows operating system that allows one to record data to optical media like any other drive volume. ... The Universal Disk Format (UDF) is a format specification of a file system for storing files on optical media. ... The Mount Rainier logo Mount Rainier is a format for re-writable optical discs which provides for packet writing and defect management. ...

External links

• Some technical information. Based on Usenet newsgroups FAQ
• Packet Writing on CDRW and DVDRW media - Linux tutorial (published November 10, 2005)
• Understanding CD-R & CD-RW by Hugh Bennett