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安全复制后恢复音频 CD

tag-icon • tag-icon audio-cd safecopy
安全复制后恢复音频 CD

我有一张音频 CD（几年前烧毁），我想将其翻录（使用K3B或其他方式）到flac.K3B无法完成，我意识到 CD 已损坏。

safecopy我设法用参数恢复数据--stage-1-3。从输出（见下文）来看，数据似乎已正确恢复。

但是，我希望能够挂载该文件并从那里获取它。不幸的是，情况似乎并非如此：

$ sudo mount -o loop -t iso9660 diskimage /media/cdrom1/
mount: block device /mnt/data/Bureau/diskimage is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/loop1,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

dmesg没有显示太多有用的输出：

$ dmesg | tail
ISOFS: Unable to identify CD-ROM format.

事实上，它似乎是一种无法识别的格式：

$ file diskimage 
diskimage: data

毫不奇怪，将文件重命名为.iso、.raw、.img或.bin没有任何区别。

网上有人推荐使用，ccd2iso但也失败了( Unrecognized sector mode (0) at sector 0!)。

我怎样才能继续从这个原始数据转储中提取音频？

这是 的输出safecopy。是stage3.badblocks空的。

$ safecopy /dev/sr0 diskimage --stage1
Low level device calls enabled mode: 2
Reported hw blocksize: 4096
CDROM audio - low level access: drive reset, raw read
CDROM low level disk size: 784954128
CDROM low level block size: 2352
Reported low level blocksize: 2352
File size: 784954128
Blocksize: 2352
Fault skip blocksize: 78493296
Resolution: 78493296
Min read attempts: 1
Head moves on read error: 0
Badblocks output: stage1.badblocks
Marker string: BaDbLoCk
Starting block: 0
Source: /dev/sr0
Destination: diskimage
......................................... [40961]    
......................................... [82945]    
......................................... [124929]    
......................................... [166913]    
......................................... [208897]    
......................................... [250881]    
................................[284577](+669325104){X [317950]    
}[317950](+78493296)
................[333739](+37135728){X}[367112](+78493296)

Done!
Recovered bad blocks: 0
Unrecoverable bad blocks (bytes): 2 (156986592)
Blocks (bytes) copied: 333739 (784954128)

xavier@marvin:~/Bureau$ safecopy /dev/sr0 diskimage --stage2
Low level device calls enabled mode: 2
Reported hw blocksize: 4096
CDROM audio - low level access: drive reset, raw read
CDROM low level disk size: 784954128
CDROM low level block size: 2352
Reported low level blocksize: 2352
File size: 784954128
Blocksize: 2352
Fault skip blocksize: 301056
Resolution: 2352
Min read attempts: 1
Head moves on read error: 0
Incremental mode file: stage1.badblocks
Incremental mode blocksize: 2352
Badblocks output: stage2.badblocks
Starting block: 0
Source: /dev/sr0
Destination: diskimage
Current destination size: 863447424
........................[309047](+726878544){X [309175]    
<<<<<<<}[309048](+2352)
.....[313338](+10090080){X<<<<<<<}[313339](+2352)
.....  8-( 95%
Done!
Recovered bad blocks: 0
Unrecoverable bad blocks (bytes): 2 (4704)
Blocks (bytes) copied: 317950 (747818400)

$ safecopy /dev/sr0 diskimage --stage3
Low level device calls enabled mode: 2
Reported hw blocksize: 4096
CDROM audio - low level access: drive reset, raw read
CDROM low level disk size: 784954128
CDROM low level block size: 2352
Reported low level blocksize: 2352
File size: 784954128
Blocksize: 2352
Fault skip blocksize: 2352
Resolution: 2352
Min read attempts: 4
Head moves on read error: 1
Incremental mode file: stage2.badblocks
Incremental mode blocksize: 2352
Badblocks output: stage3.badblocks
Starting block: 0
Source: /dev/sr0
Destination: diskimage
Current destination size: 863447424
.  8-( 93%
Done!
Recovered bad blocks: 0
Unrecoverable bad blocks (bytes): 0 (0)
Blocks (bytes) copied: 313339 (736973328)

答案1

我也遇到了类似的问题，我希望恢复在我的 CD 播放器中开始跳动的 CD。我在网上搜索寻找答案，但没有结果。但经过实验，我发现您可以将恢复的文件作为原始数据导入 Audacity。然后您可以根据需要分离轨道并重新编码。

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