root@armadillo:~# mount -t vfat /dev/sda1 /mnt
mount: special device /dev/sda1 does not exist
root@armadillo:~# reboot


mmcblk0: mmc0:1234 SA16G 14.4 GiB
 mmcblk0:

root@armadillo:~# mount -t vfat /dev/mmcblk0 /mnt
root@armadillo:~# nmcli device
DEVICE    TYPE      STATE         CONNECTION
ttyACM3   gsm       disconnected  --
eth0      ethernet  unavailable   --
gre0      gre       unmanaged     --
gretap0   gretap    unmanaged     --
ip6gre0   ip6gre    unmanaged     --
ip6tnl0   ip6tnl    unmanaged     --
tunl0     ipip      unmanaged     --
lo        loopback  unmanaged     --
sit0      sit       unmanaged     --
ip6_vti0  vti6      unmanaged     --
root@armadillo:~# service NetworkManager stop
IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
root@armadillo:~# service ModemManager stop
root@armadillo:~# cu -l /dev/ttyACM0 -s 115200
Connected.
AT^SMSO
^SMSO: MS OFF

OK

^SHUTDOWN
usb 2-1.2: USB disconnect, device number 3
cu: Got hangup signal

Disconnected.
root@armadillo:~# usb 2-1.2: new high-speed USB device number 4 using ci_hdrc
cdc_acm 2-1.2:1.0: ttyACM0: USB ACM device
cdc_acm 2-1.2:1.2: ttyACM1: USB ACM device
cdc_acm 2-1.2:1.4: ttyACM2: USB ACM device
cdc_acm 2-1.2:1.6: ttyACM3: USB ACM device
cdc_acm 2-1.2:1.11: ttyACM4: USB ACM device
cdc_acm 2-1.2:1.13: ttyACM5: USB ACM device

root@armadillo:~# service ModemManager start
root@armadillo:~# service NetworkManager start
root@armadillo:~# fec 30bf0000.ethernet eth0: Freescale FEC PHY driver [Vitesse VSC8501] (mii_bus:phy_addr=30bf0000.etherne:00, irq=-1)
IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready

root@armadillo:~# nmcli device
DEVICE    TYPE      STATE                 CONNECTION
ttyACM3   gsm       connecting (prepare)  gsm-ttyACM3-6
eth0      ethernet  unavailable           --
gre0      gre       unmanaged             --
gretap0   gretap    unmanaged             --
ip6gre0   ip6gre    unmanaged             --
ip6tnl0   ip6tnl    unmanaged             --
tunl0     ipip      unmanaged             --
lo        loopback  unmanaged             --
sit0      sit       unmanaged             --
ip6_vti0  vti6      unmanaged             --
root@armadillo:~# nmcli connection up gsm-ttyACM3-6
Error: Timeout 90 sec expired.
root@armadillo:~# ping www.atmark-techno.com
ping: unknown host www.atmark-techno.com
root@armadillo:~# cp /var/log/syslog /mnt
root@armadillo:~# umount/mnt
-bash: umount/mnt: No such file or directory
root@armadillo:~# umount /mnt
root@armadillo:~# mmc0: card 1234 removed