root@fnord:~# mount /dev/sda1
root@fnord:~# mount /boot
mount: /dev/sda1 ist bereits eingehängt oder /boot wird gerade benutzt
mount: Laut mtab ist /dev/sda1 schon auf /boot eingehängt
root@fnord:~# tune2fs -l /dev/sda1
tune2fs 1.42.9 (4-Feb-2014)
Filesystem volume name:   <none>
Last mounted on:          /boot
Filesystem UUID:          35bc5b71-6b43-4f42-97d4-34131f5fb821
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal ext_attr resize_inode dir_index filetype needs_recovery extent flex_bg sparse_super huge_file uninit_bg dir_nlink extra_isize
Filesystem flags:         signed_directory_hash 
Default mount options:    user_xattr acl
Filesystem state:         clean
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              128016
Block count:              512000
Reserved block count:     25600
Free blocks:              385629
Free inodes:              127703
First block:              1
Block size:               1024
Fragment size:            1024
Reserved GDT blocks:      256
Blocks per group:         8192
Fragments per group:      8192
Inodes per group:         2032
Inode blocks per group:   254
Flex block group size:    16
Filesystem created:       Mon Jun  1 21:45:21 2015
Last mount time:          Mon Jun 29 22:03:41 2015
Last write time:          Mon Jun 29 22:03:41 2015
Mount count:              1
Maximum mount count:      -1
Last checked:             Mon Jun 29 21:55:42 2015
Check interval:           0 (<none>)
Lifetime writes:          325 MB
Reserved blocks uid:      0 (user root)
Reserved blocks gid:      0 (group root)
First inode:              11
Inode size:	          128
Journal inode:            8
Default directory hash:   half_md4
Directory Hash Seed:      6427085b-2b18-4f1b-82ca-4a8726257ed6
Journal backup:           inode blocks
root@fnord:~#