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Does this help? unix.stackexchange.com/q/37119/28489 - e.g.: sudo debugfs /dev/sdd1 then icheck 203953715 and use the indicated inode number (NNN) to do ncheck NNN ...
logical block
means the same thing assector
sudo debugfs /dev/sdd1
thenicheck 203953715
and use the indicated inode number (NNN) to doncheck NNN
...