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e2fsck 1.42 (29-Nov-2011) fsck.ext4: Superblock invalid, trying backup blocks... fsck.ext4: Bad magic number in super-block while trying to open /dev/sdb1
使用e2fsck进行修复即可。
http://unix.stackexchange.com/questions/33284/recovering-ext4-superblocks
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原文地址：http://www.cnblogs.com/silenceli/p/4465617.html
