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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: https://linux.die.net/man/8/dumpe2fs.

  • 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}}