Alcohol 120% 的五種燒錄方式各有什麼區別

Alcohol 120% 的五種燒錄方式各有什麼區別 

Before reading this post you must know that when you extract an image from a CD (useful in order to do a 'true copy' of the CD, whose layout is made up by 'sectors', 74 min = 330,000 sectors) you can extract data in many ways:

在讀這個帖子之前,你必須知道在給一張光盤做映像時(一般用於“完整複製”一張光盤,光盤是由一個個的“扇區”組成的,74分鐘=330,000扇區),讀取光盤的數據有下面幾種方式:

1) 'cooked' (2048 bytes/sector);

1) 一般情況下:2048字節/扇區;(注:這2048個字節應該是光盤存儲的正常數據)

2) RAW (2352 bytes/sector) 

2) 原始模式RAW: 2352字節/扇區(注:2352個字節除了包括2048個字節的正常數據,應該還包括校驗數據)

3) RAW+SUB (2352 bytes + 96 bytes for  subchannel data P-W = 2448 bytes)

3) 原模式RAW + 子通道SUB2352字節 + 96字節的P-W子通道數據 = 2448字節。(所謂的子通道及P-W,總之是附屬於光盤上一個扇區的額外的數據)

SUB data are sometimes used for storing CD-TEXT, CD-G (Karaoke) and some protection methods.

子通道數據有時用於存儲CD-TEXTCD-G(卡拉OK)以及光盤防拷數據等。 
 

Well, when you burn back the extracted info on a CD-R you can choose between 5 different burning modes (not all software supports them):

好,當你刻錄一張光盤映像時,你可以選擇5種不同的刻錄模式(不是所有的刻錄軟件都支持這5種模式): 

1) TAO (track-at-once).一次性軌道刻錄

You burn on the CD-R all data (2048 of 2352) but recalculate - thereby changing them - all correction codes. On multiple tracks CDs, the laser pauses between them (this mean you cannot record Live Audio CDs without gaps)

刻錄2352字節中的2048個字節但重新計算(因此也改變了)校驗數據。在多軌光盤上,激光頭會在每個軌道之間停頓(這意味着你不能用這種方式刻錄沒有間隙的音樂光盤)。 

2) DAO/SAO (disc-at-once , session-at-once).(整盤一次性,區段一次性)

As TAO, but the laser does not pause between tracks. This way you will not add extra pauses between tracks. You can record Live Audio CDs without gaps.

(SAO is smilar to DAO, but DAO closes the disc, SAO closes only the last session)

類似於TAO模式,但激光頭不會在軌道間停頓(譯者注:參考下文,這種模式還是先刻錄2048字節,也要重新計算校驗數據),由於這種模式沒有在軌道間添加多餘的停頓,因此可以用這種模式刻錄沒有間隙的音樂光盤。(SAO模式跟DAO模式類似,不同的是DAO將終結整張光盤,而SAO只是終結最後一個區段) 

3) RAW SAO (sometimes simply called 'RAW Write'). 原始的SAO(有時候簡單的稱爲“原始刻錄”)。

You burn all 2352 bytes you extrcatced on the CD. Since you do not recalculate ECC/EDC, you end up with an 1:1 copy of the sector. Please note that since the error correction codes are not recalculated, the chance of burning incorrect data is higher. Avoid burning at very high speed.

直接刻錄2352字節,由於沒有重新計算ECC/EDC(校驗數據),所以這種方式是1:1的複製整個扇區。注意:由於沒有重新計算校驗數據,刻錄出錯的機率會大大增加,因此避免在較高的速度下進行刻錄。 

4) RAW SAO 16 (sometimes called DAO 16). (有時叫DAO 16

As RAW SAO, but you'll also write P and Q subchannel data (8 bytes each). You need an image complete with .SUB info to do that (CloneCD, for instance; .BIN/.CUE format is no good for that since only stores the 2352 part). You'll end up with an 1.1 copy of the sector plus the P-Q subchannels.

類似於RAW SAO,但還會寫入PQ子通道數據(每個子通道8個字節,兩個加起來是16個字節,因此叫DAO 16)。這種模式要求映像文件保存有.SUB數據(例如CloneCD.BIN/.CUE只是保存了2352字節的數據,因此不適合這種模式)。這樣你就刻錄了一張1:1複製扇區再加上P-Q子通道數據的光盤。 

5) RAW DAO (sometimes called DAO 96).(有時候叫DAO 96)

As above, but you'll also write P - W subchannel data. As above, you need an image complete with .SUB info to do that. You'll end up with a 'perfect' copy (1.1 copy of the sector plus the P-W subchannels).

與上面類似,但會寫入P-W子通道數據(96個字節)。這種方式同樣需要你的映像文件包括.SUB數據。使用這種模式你可以“完美”的複製一張光盤(1:1的複製扇區再加上P-W的子通道數據)。 

譯者注:綜上所述,凡是1:1複製扇區的刻錄模式,例如RAW SAO, DAO 16, DAO 96,都不能以太高的速度刻錄,因爲沒有重新計算校驗數據。 

For backup purposes of many protected CDs RAW DAO is suggested.

對於備份一些加了防拷保護的光盤,建議使用RAW DAO(即DAO 96)模式。

If your burner does not support RAW DAO you might try these minimal settings (to be confirmed yet):

如果你的刻錄機(刻錄軟件)不支持RAW DAO模式,你可以嘗試這些最小限度的設置(當然需要確認):

- Safedisc and Laserlock backups NEED at least RAW SAO (Safedisc v.2 backup needs also FantomCD/Alcohol's 'Bypass EFM errors' or CloneCD's 'Amplify Weak Sectors' settings)

- Safedisc Laserlock的保護方式至少需要RAW SAOSafedisc v.2需要FantomCD/Alcohol的“忽略EFM錯誤”或者CloneCD的“弱扇區增強”設置)

- SecuROM and Libcrypt (PSX) NEED at least RAW SAO 16. 

- SecuROMLibcrypt(PSX)保護方式至少需要RAW SAO 16

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