disk at once

**mulicia** · 2002-05-13, 06:42 PM

我用5582，disk at once我懂，但是還有一個是disk at once/96這是什麼呀？

**wtjams** · 2002-05-14, 10:57 AM

最初由 mulicia 發表
我用5582，disk at once我懂，但是還有一個是disk at once/96這是什麼呀？

看看 cloneCD 的解釋吧!

"
RAW-DAO 96 = 2352 bytes RAW Data + 96 Bytes P-W Subchannel Data. This is the best mode for CloneCD. It allows writing of all subchannel information, including Digital Signatures, CD-Text, ISRC, Catalog Numbers, CD+G, CD+Midi, Gaps, Indices and Crazy TOCs.
RAW-DAO 94 = 2352 bytes RAW Data + 94 Bytes P-W Subchannel Data. Same as RAW-DAO 96, but 2-Bytes CRC of the Q Subchannel are generated by the writer.
RAW-DAO 16 = 2352 bytes RAW Data + 16 Bytes P-Q Subchannel Data. This is the second best mode for CloneCD. It allows writing of most subchannel information, including most Digital Signatures, ISRC, Catalog Numbers, Gaps, Indices and Crazy TOCs. 2-Bytes CRC of the Q Subchannel are generated by the writer.
RAW-SAO = 2352 bytes RAW Data. This is the third best mode for CloneCD. Feature support is drive dependend. ISRC, Catalog Numbers and Indices can be written. Usually CD-Text, CD+G and CD+MIDI can be written as well. Crazy TOCs and Digital Signatures can't be written in this mode.
SAO = 2352 bytes error corrected Data. This is the worst mode for CloneCD. Writing of ISRC, Catalog Numbers, Indices and usually CD-Text is supported.
"

**mulicia** · 2002-05-14, 10:59 AM

我........英文不好，對不起

**wtjams** · 2002-05-15, 08:35 AM

最初由 mulicia 發表
我........英文不好，對不起

"RAW-DAO 96 = 2352 bytes RAW Data + 96 Bytes P-W Subchannel Data. "
大意是說 RAW DAO(disk at once) 一般磁區主要通道有 2352 byte 另外加上次通道的96 byte 是clone CD 最好的寫入模式.
另外建議看看 jess 版主的大作 "光磁容量計算淺談"

http://www.pczone.com.tw/showthread.php?t=59887

**mulicia** · 2002-05-15, 11:45 AM

我的疑問是；加了那96有差嗎？會比較穩嗎？

**wtjams** · 2002-05-15, 01:48 PM

最初由 mulicia 發表
我的疑問是；加了那96有差嗎？會比較穩嗎？

我不知道您所謂的"穩"的意思，不過考慮次通道的空間如果放了一些除錯碼或檢核碼或其他的東東．．．，您在備份光碟時，可能就會因為少了這些東東而不能執行，尤其是Game方面的光碟啦．因此jess 板大的大作中提到”光碟片容納資料的最小單位稱為sector(磁區)，磁區分主通道和次通道兩部份。主通道是正常資料(檔案、音軌..)儲存所在，大小是2352 bytes，計算光碟容量時，僅僅計算此部份；次通道次通道有P~W等八個，總計98位元組，則原本是擺放像音樂光碟的歌手、曲名、公司等及一些其他用途”但是沒人規定次通道的空間只放音樂光碟曲名等資料吧！