Forgot to use sudo command 
Dez 02 06:56:43 osmc kernel: sd 1:0:0:0: [sdb] 3907029168 512-byte logical blocks: (2.00 TB/1.81 TiB)
Dez 02 06:56:43 osmc kernel: sd 1:0:0:0: [sdb] Write Protect is off
Dez 02 06:56:43 osmc kernel: sd 1:0:0:0: [sdb] Mode Sense: 28 00 00 00
Dez 02 06:56:43 osmc kernel: sd 1:0:0:0: [sdb] No Caching mode page found
Dez 02 06:56:43 osmc kernel: sd 1:0:0:0: [sdb] Assuming drive cache: write through
Dez 02 06:56:43 osmc kernel: sdb: sdb1 sdb2
Dez 02 06:56:43 osmc kernel: sd 1:0:0:0: [sdb] Attached SCSI disk
...
Dez 02 06:56:44 osmc hdparm[191]: Setting parameters of disc: /dev/sdb.
...
Dez 02 06:56:54 osmc udisks-glue[344]: Device file /dev/sda inserted
Dez 02 06:56:54 osmc udisks-glue[344]: Device file /dev/sdb1 inserted
Dez 02 06:56:54 osmc udisks-glue[344]: Trying to automount /dev/sdb1...
Dez 02 06:56:55 osmc kernel: survey done event(37) band:0 for wlan0
Dez 02 06:56:55 osmc kernel: rtw_select_and_join_from_scanned_queue: return _FAIL(candidate == NULL)
Dez 02 06:56:55 osmc kernel: try_to_join, but select scanning queue fail, to_roaming:0
Dez 02 06:56:55 osmc ntfs-3g[443]: Version 2014.2.15AR.2 integrated FUSE 28
Dez 02 06:56:55 osmc ntfs-3g[443]: Mounted /dev/sdb1 (Read-Write, label "Volume", NTFS 3.1)
Dez 02 06:56:55 osmc ntfs-3g[443]: Cmdline options: rw,nodev,nosuid,uid=1000,gid=1000,dmask=0077,fmask=0177,fmask=0111,dmask=0000,uhelper=udisks
Dez 02 06:56:55 osmc ntfs-3g[443]: Mount options: rw,nodev,nosuid,uhelper=udisks,allow_other,nonempty,relatime,default_permissions,fsname=/dev/sdb1,blkdev,blksize=4096
Dez 02 06:56:55 osmc ntfs-3g[443]: Global ownership and permissions enforced, configuration type 7
Dez 02 06:56:55 osmc wpa_supplicant[401]: WPS: Converting push_button to virtual_push_button for WPS 2.0 compliance
Dez 02 06:56:55 osmc udisks-glue[344]: Successfully automounted /dev/sdb1 at /media/Volume
Dez 02 06:56:55 osmc sudo[431]: osmc : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/sbin/hdparm -S 240 /dev/mmcblk0
Dez 02 06:56:55 osmc sudo[437]: osmc : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/sbin/hdparm -S 240 /dev/sdb
Dez 02 06:56:55 osmc sudo[437]: pam_unix(sudo:session): session opened for user root by (uid=0)
Dez 02 06:56:55 osmc sudo[431]: pam_unix(sudo:session): session opened for user root by (uid=0)
Dez 02 06:56:55 osmc udisks-glue[344]: Device file /dev/sdb2 inserted
Dez 02 06:56:55 osmc udisks-glue[344]: HDIO_DRIVE_CMD(setidle) failed: Invalid argument
Dez 02 06:56:55 osmc udisks-glue[344]: Trying to automount /dev/sdb2...
Dez 02 06:56:55 osmc sudo[437]: pam_unix(sudo:session): session closed for user root
Dez 02 06:56:55 osmc udisks-glue[344]: /dev/sdb:`
Dez 02 06:56:55 osmc udisks-glue[344]: setting standby to 240 (20 minutes)
Dez 02 06:56:55 osmc sudo[431]: pam_unix(sudo:session): session closed for user root
...
Dez 02 06:57:00 osmc ntfs-3g[455]: Version 2014.2.15AR.2 integrated FUSE 28
Dez 02 06:57:00 osmc ntfs-3g[455]: Mounted /dev/sdb2 (Read-Write, label "", NTFS 3.1)
Dez 02 06:57:00 osmc ntfs-3g[455]: Cmdline options: rw,nodev,nosuid,uid=1000,gid=1000,dmask=0077,fmask=0177,fmask=0111,dmask=0000,uhelper=udisks
Dez 02 06:57:00 osmc ntfs-3g[455]: Mount options: rw,nodev,nosuid,uhelper=udisks,allow_other,nonempty,relatime,default_permissions,fsname=/dev/sdb2,blkdev,blksize=4096
Dez 02 06:57:00 osmc ntfs-3g[455]: Global ownership and permissions enforced, configuration type 7
Dez 02 06:57:00 osmc udisks-glue[344]: Successfully automounted /dev/sdb2 at /media/01D0AE7114EFC620
Dez 02 06:57:00 osmc udisks-glue[344]: Device file /dev/sdb1 mounted at /media/Volume
Dez 02 06:57:00 osmc udisks-glue[344]: Device file /dev/sdb2 mounted at /media/01D0AE7114EFC620
Dez 02 06:57:01 osmc sudo[471]: osmc : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/usr/bin/net usershare add Volume /media/Volume Auto-mount Volume osmc\osmc:f
Dez 02 06:57:01 osmc sudo[471]: pam_unix(sudo:session): session opened for user root by (uid=0)
Dez 02 06:57:01 osmc sudo[474]: osmc : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/usr/bin/net usershare add 01D0AE7114EFC620 /media/01D0AE7114EFC620 Auto-mount Volume osmc\osmc:f
Dez 02 06:57:01 osmc sudo[474]: pam_unix(sudo:session): session opened for user root by (uid=0)