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Track-at-Once. This is the default. For track at once, the laser

is turned off after each track, which produces a two-second

gap. The track-at-once feature, enables songs and data to be

written at different intervals. The lead-in sectors that are

written at the beginning of each session contain the location

where additional data can be placed on the disc. 
Disc-at-Once. If this option is checked, the lead-in, all the

tracks and lead-out are written in same action. The laser is

kept on for the entire session.

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.  A closed disc means no additional

data can be added. If the disc is left open additional data

can be added in another session. 

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. The file system is the method by which the

files and folder are arranged on the burned disc. Joliet is

best for most CD burning applications. UDF 1.02 is best for

DVD burning. UDF 2.6 is used for Blu-ray.  The recording

engine can also add a bridge which effectively adds another

file system to the disc. UDF1.02 with a Joliet bridge is the

default. 

Most of the differences between file system types relate to

file name length and character restrictions and folder level

depth. ISO is the most restrictive and oldest and UDF is the

least restrictive newest file type. The complete list of speci-

fications for each is several hundred pages. Macs and PCs

can read both types.

If you would like to make your burned disc compatible

with very old operating systems or other less popular oper-

ating systems use the ISO system. 

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. If this option is checked the recorder tests a

disc for record ability before burning. The drive laser is set

to read power and the entire surface is scanned for errors.

This takes the same amount of time as recording. (DVD+R

media can not be tested) This options can not be used in

combination with normal recording or verify.

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. If this option is checked, it compares the copy with

the master bit for bit. If it finds a discrepancy it rejects the

disc. Verify is an extremely high quality standard. If the

disc is audio or video, the discs may still be playable and

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