Weak sectors
From Ruud Koot
| Code | Usage |
|---|---|
| 3F65 | SafeDisc 2 |
| 7D65 | SafeDisk 2 |
| 1212 | SafeDisc 2.51 |
| 14B9 | SafeDisc 2.51 |
| 659A | Impossible |
| 04B9 | Impossible |
SD2.0〜2.4 97A1 6804 082A 7D65 AAED 5859 7E80 3F65 5A5F ○ ○ ○ △ ○ ○ ○ △ ○ SD2.5x〜2.8 1212 14B9 2D9E 3916 × × ○ ○ SD2.9〜3.1 3045 15FA 9B6D ○ ○ × SD3.15〜4.0 2959、2929、5959、297C、597C、7C59、7C7C、A7B9、C9B9、CCB9 × DVD SD3.2 CB1C B904 7B65 7A65 × × × × ※7D65と3F65は再現できない場合もあり。http://wiki.livedoor.jp/zx93/d/CRW4048
Twin sectors as an AWS method won't work. For really weak sectors (1212, 14B9, 01B9, 7AB9, 7C12), one single sector is more than enough to cause a DSV far too high.
Then this is a major difference between CD-ROM and cd-audio. I wonder why did't they do scrambling for cd-audio. (Does this mean that if i write a SYNC command as audio data, then it will confuse the CD-ROM drive? )
http://ixbtlabs.com/articles2/magia-chisel/
The Patterns 659A and 04B9 do not work properly on any writer I know. Only a few Toshiba writers produce something readable as long as you only put one sector of these patterns. If a writer does not handle a certain pattern, then usually 1 weak sector is enough to render the preceding sector and the following sector unreadable as well
