LaCie 301910 user manual DVD±RW Writing Methods

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LaCie Slim DVD±RW • Design by Sam Hecht

Helpful Technical Information

User Manual

page 15

 

 

 

4.3. DVD±RW Writing Methods

Disc at Once (DAO) – A DVD writing process in which the entire DVD is recorded in one session, and data cannot be added after the recording is finished. This differs somewhat from the CD-R DAO method because the lead-in area, data area, and lead-out area are all written sequentially.

Session at Once (SAO) – A writing process which is similar to DAO, where information is written in a session, but allowing for record further recording at a later time. This mode provides for greater control of the recording process than Packet Writing (PW) or TAO, and more disc space can be utilized because there is no need for gaps between tracks.

Incremental Recording (IR) – A writing process that is similar to the Session at Once (SAO) CDR writing method; files may be added directly to the DVD-R disc one recording at a time, instead of record- ing the files to a hard drive before writing the disc. The minimum recorded size, though, must be at least 32KB (even if the file to be recorded is smaller than that), and capacities and write speeds are decreased due to the overhead of combined lead-in/out areas and data. Also, the disc must be finalized before it may be played back by a drive other than the drive recording the disc.

Multi-Border Recording (MBR) – A writing process that is very similar to IR, MBR allows you to make an IR disc and then play the disc back on a device that recognizes this type of recording method. MBR creates a very short boundary zone around a recording ses- sion so a compatible player or DVD-ROM drive does not attempt to play beyond the border of the recorded area, instead allowing the unfinished disc to be read by a player that supports this recording method.

Restricted Overwriting (RO) – With this method, if a disc has already been written to, new data segments can be randomly inserted any- where within the recorded boundary. New data, however, can only be added to an area of the disc that has already been recorded over and from the point where the last session was stopped.

Packet Writing (PW) – A drag-and-drop writing process that is very useful for data backup. Buffer underrun* is impossible in this mode, because the data is written in “packets” of a few KBs. Packet Writing is a CPU-intensive process because it constantly checks the avail- able space on the disc.

*Buffer Underrun – The recording of a disc is a system-intensive ap- plication, and the rewritable drive needs a constant stream of data. A buffer underrun occurs when the stream of data to the rewritable drive is not fast enough to keep the rewritable drive’s buffer full, causing an error in the recording process. If this problem occurs often, turn down the recording speed.

Table 02 - DVD±RW Writing Methods

 

DAO

SAO

IR

MBR

RO PW

CD

 

 

DVD

 

 

 

 

 

 

 

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Contents Table of Contents Canada Compliance Statement CopyrightsTrademarks ChangesHealth, Safety & General Use Precautions Health & Safety PrecautionsGeneral Use Precautions LaCie Slim DVD±RW D esign by S am H echt Double Layer DVD Recording IntroductionQuick Links Click a topicLinux Users Minimum System RequirementsWindows Users Mac UsersBox Content Load/Eject Button Push this button to open the media tray Views of the DriveFront View Rear ViewUSB Icons Cables and ConnectionsHi-Speed USB USB 2.0 Y CableDVD and CD Media Format Definitions Supported DVD and CD FormatsWindows Users Connecting Your LaCie Slim DVD±RWConnecting the USB 2.0 Y Cable Mac UsersTo insert a disc Using Your LaCie Slim DVD±RWAccessing Discs Inserting DiscsEmergency Disc Ejection Ejecting DiscsHelpful Technical Information DVD and CD SoftwareFile System Formats DVD±RW Writing Methods What Are the Benefits of the USB Interfaces? About DVD/CD Available CapacityUSB Questions & Answers Data TransfersManual Updates TroubleshootingMac Users Problem Question SolutionSure your USB hub supports Hi-Speed USB Uninstall the drivers and re-install themSoftware program that you are using Drive is not running Are there other USB devices conRecording software Try using another piece of mediaDoes the drive support the format Disc. If in doubt, try another discOn the next Windows UsersHard drive, and then make the recording from the data on Drive’s media tray Are you receiving buffer underrunInternal and external peripherals Information Where to Find InformationContacting Customer Support Before You Contact Technical SupportLaCie Technical Support Contacts Warranty Information Contact usPhone 02 8063 Email info.au@lacie.com