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Writing Quality And Media Compatibility, Continued

High Speed Burning via USB2.0 - Waitec FrisbyII
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We deactivated Smartburn for the next set of measurements. All media is rated at 40x.

Tested Media
CDR
Size Certified Speed Write Speed Strategy Manuf Good Sectors Damag
-ed Sectors
Unread
-able Sectors
Write Time
Octron 700 MB 24X 40X Short Ritek Co. 99.27% 0.73% 0.00% 03:13
Verbatim 700 MB 24X 40X Long Mitsubishi Chemicals Corp. 63.26% 30.17% 6,58% 03:09
Tevion 700 MB 32X 40X Short Ricoh Company Ltd. 99.90% 0.10% 0.00% 03:09
TDK 700 MB 40X 40X Short Ritek Co. 100.00% 0.00% 0.00% 03:10
Traxdata 700 MB 48X 40X Long Disc ID not allowed 99.48% 0.52% 0.00% 03:07
Traxdata 700 MB 40x 40X Short Ritek Co. 100.00% 0.00% 0.00% 03:09

The results show that Smartburn is certainly worth having. The figures for the Verbatim CD make its benefits particularly clear. Although you can shave 10 seconds off the overall writing time by switching Smartburn off, you will greatly increase the chances of producing coasters if you do so. The diagram shows why.

Data corruption. The yellow, vertical lines indicate defective sectors; red lines show unreadable areas.

As you can see, the drive has a real problem reading the data. Nearly 7% of the sectors are so badly corrupted that they are completely unreadable.

Here is a summary of our tests using three different RW media.

Tested Media
CDRW
Size Certified Speed Write Speed Strategy Manu. Good Sectors Damag
-ed Sectors
Unread
-able Sectors
Write Time
Fuji 650 MB 10X 12X
10x
Phase change Disc ID not allowed 86.83%
61.75%
13.05%
38.14%
0.11%
0.11%
06:49
08:04
LiteOn 650 MB 12X 12x
10x
Phase change NAN-YA Plastics Corp. 98.30%
93.64%
1.59%
6.24%
0.11%
0.11%
06:54
08:13
Ricoh 650 MB 10x 12x
10x
Phase change Disc ID not allowed 96.71%
98.41%
3.18%
1.48%
0.11%
0.11%
06:55
08:06
FrisbyII Writing Quality: TAO mode

It looks like burning RWs isn't really the FrisbyII's favorite job, because we were unable to burn data that was entirely free of errors. When using CD-RWs, we would therefore recommend that you limit the writing speed strictly to the maximum speed specified for your media. Otherwise you run the risk of creating a RW disc with an unacceptable number of errors. The drive shows the interesting effect (and it is not alone here) that the last sectors of the TAO data CD-RW are unreadable. We found the same thing with data CD-Rs in TAO mode.

Using DAO mode, we got the following results:

Tested Media
CDRW
Size Certified Speed Write Speed Strategy Manu. Good Sectors Damag
-ed Sectors
Unread
-able Sectors
Write Time
Fuji 650 MB 10X 12X
10X
Phase change Disc ID not allowed 3.52%
98.18%
96.48%
1.82%
0.00%
0.00%
06:43
08:00
LiteOn 650 MB 12X 12x
10X
Phase change Disc ID not allowed 99.21%
93.08%
0.79%
6.92%
0.00%
0.00%
06:44
08:01
Ricoh 650 MB 10x 12X
10X
Phase change Mitsubishi Chemicals Corp. 99.43%
98.41%
0.57%
1.59%
0.00%
0.00%
06:44
08:01
FrisbyII Write Quality: DAO mode

In DAO mode, too, it is advisable not to exceed the writing speed specified for the media, since doing so will increase the error rate and make it difficult for other drives to read the burned disc.

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