我刚刚使用以下命令将一个 160gb 磁盘复制到另一个相同的 160gb 磁盘
sudo dd if=/dev/sda of=/dev/sdb
（在实时 Ubuntu CD 上运行）
但是，SMART 测试/dev/sdb显示有 20 个坏扇区。这是否意味着我刚从一个磁盘复制到另一个磁盘的数据中有 20 个漏洞？我可以通过其他方式复制来解决这个问题吗？
编辑：添加输出：
sudo fsck -c -v /dev/sda1/
fsck from util-linux 2.20.1
e2fsck 1.42 (29-Nov-2011)
Checking for bad blocks (read-only test): 0.00% done, 0:00 elapsed. (0/0/0 errdone
Lubuntu: Updating bad block inode.
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
Lubuntu: ***** FILE SYSTEM WAS MODIFIED *****
275092 inodes used (4.30%)
1888 non-contiguous files (0.7%)
583 non-contiguous directories (0.2%)
# of inodes with ind/dind/tind blocks: 0/0/0
Extent depth histogram: 241132/283/2
6505902 blocks used (25.41%)
0 bad blocks
1 large file
208425 regular files
28234 directories
57 character device files
25 block device files
1 fifo
41 links
38340 symbolic links (33583 fast symbolic links)
1 socket
--------
275124 files
sudo fsck -c -v /dev/sdb1
fsck from util-linux 2.20.1
e2fsck 1.42 (29-Nov-2011)
Checking for bad blocks (read-only test): 0.00% done, 0:00 elapsed. (0/0/0 errdone
Lubuntu: Updating bad block inode.
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
Lubuntu: ***** FILE SYSTEM WAS MODIFIED *****
275092 inodes used (4.30%)
1888 non-contiguous files (0.7%)
583 non-contiguous directories (0.2%)
# of inodes with ind/dind/tind blocks: 0/0/0
Extent depth histogram: 241132/283/2
6505902 blocks used (25.41%)
0 bad blocks
1 large file
208425 regular files
28234 directories
57 character device files
25 block device files
1 fifo
41 links
38340 symbolic links (33583 fast symbolic links)
1 socket
--------
275124 files
答案1
它可以理论上，您的文件系统和驱动器应该可以解决这个问题。处理损坏的磁盘时，我倾向于使用以恢复为中心的 dd 变体，例如 gnu ddrescue（不要与其他较旧的 ddrescue 混淆），因为它们会在坏扇区处重试后数据被复制出来。然后我会运行一个合适的文件系统检查实用程序，如 chdsk 或 fsck，以确保文件系统是健康的。
但是，看看输出结果，你应该没问题。你系统中的魔法侏儒干得很棒 ;p