23rd January 2021
dumpe2fs: When was my hard-drive first formatted?
I repeatedly forget to remember when my hard-drive or SSD was first formatted.
Command for this is
dumpe2fs. This command is part of package e2fsprogs. Example:
# dumpe2fs -h /dev/sda1 dumpe2fs 1.45.6 (20-Mar-2020) Filesystem volume name: <none> Last mounted on: /boot Filesystem UUID: 83a1bedb-6fd3-46d0-8900-e4e09536168e Filesystem magic number: 0xEF53 Filesystem revision #: 1 (dynamic) Filesystem features: ext_attr resize_inode dir_index filetype sparse_super Filesystem flags: signed_directory_hash Default mount options: user_xattr acl Filesystem state: clean Errors behavior: Continue Filesystem OS type: Linux Inode count: 62248 Block count: 248832 Reserved block count: 12441 Free blocks: 126393 Free inodes: 61933 First block: 1 Block size: 1024 Fragment size: 1024 Reserved GDT blocks: 256 Blocks per group: 8192 Fragments per group: 8192 Inodes per group: 2008 Inode blocks per group: 251 RAID stride: 4 RAID stripe width: 4 Filesystem created: Mon Apr 21 13:45:32 2014 Last mount time: Sun May 31 14:18:09 2020 Last write time: Mon Jun 1 00:40:25 2020 Mount count: 35 Maximum mount count: -1
You must be root to use this command. It does not work for encrypted disks (LUKS) or volume groups.