46
11.1.3) Session-at-Once (SAO)
As a writing method that combines the advantages of the above-mentioned “Disc-at-
Once” and “Track-at-Once,” you can combine multiple tracks into one session and write
them, and then add additional data.
For example, this is the writing method used to create a CD EXTRA format CD. The audio
tracks will be recorded in the first session and the data will be recorded in the second.
11.1.4) Packet Writing
This mode is used when writing to a track of a disc using small blocks of data called
“packets,” in a manner similar to a floppy disk. This mode is useful when making small
incremental backups of data. You will need to use software which specifically supports
packet writing, such as Adaptec’s DirectCD.
Iportant Note:
Discs must be formatted before they can be used for packet writing. With CD-
RW, erased data can be overwritten until the disc is completely full. With CD-R, the space used
by the erased data cannot be reused and is “masked” so that it is no longer visible.
11.2) About the Firmware
The “firmware” is a small piece of software built into the CRW2100SZ and CRW2100EZ
drive, and is used to control its basic operation. Since it resides in flash memory, it can
be overwritten and updated.
To ensure the correct operation of your new drive, updates to the firmware will be made
available. You can find information about the most recent firmware for the drive on
YAMAHA CD-R/RW Drives web site.
URL for YAMAHA CD-R/RW Drives web site is http://www.yamaha.com or
http://www.yamaha.co.jp/english/product/computer/
The most recent user support information, including firmware updates, can be found in
the CD-R area of Yamaha’s web site. Please check this information regularly.
Important Note
: The firmware is completely unrelated to the CD writing application software.
Lead-in
Lead-out
Lead-out
/Lead-in
Data
Audio
Audio
Audio
0
650MB
Track 1
Track 2
Track 3
Track 4
Session 1
Session 2
Example: CD EXTRA
1
2
3
4
5
6
7
8
.
.
.
.
.
.
.
.
.
.
.
.
Packet
Same as writing to floppy or hard disk
