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dumpe2fs

Print the super block and blocks group information for ext2/ext3/ext4 filesystems.

Unmount the partition before running this command using `umount {device}`.

More information.

• Display ext2, ext3 and ext4 filesystem information:

dumpe2fs {/dev/sdXN}

• Display the blocks which are reserved as bad in the filesystem:

dumpe2fs -b {/dev/sdXN}

• Force display filesystem information even with non-recognisable feature flags:

dumpe2fs -f {/dev/sdXN}

• Only display the superblock information and not any of the block group descriptor detail information:

dumpe2fs -h {/dev/sdXN}

• Print the detailed group information block numbers in hexadecimal format:

dumpe2fs -x {/dev/sdXN}

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