Definition:
- dump ext2/ext3/ext4 file system information
Synopsis:
dumpe2fs [ -bfghixV ] [ -o superblock=superblock ] [ -o blocksize=blocksize ] device
List of options:
-b: print the blocks reserved as bad- .
-f: force- .
-i: display the file system data from an image file created by e2image, using device as the path‐name to the image file.- .
-x: print the detailed group information block numbers in hexadecimal format