cd /home/user/MyDocs/ mkdir /sailfish mount /dev/mmcblk0p4 /sailfish !! don't working :/ tar --numeric-owner -xvjf sailfish.tar.bz2 -C /sailfish/ sync When i write mmcblk0 i got "Device or resource busy" When i write mmcblk0p4 i got "Failded: no such file or directory" :/