~ $ root


BusyBox v1.10.2 (Debian 3:1.10.2.legal-1osso30+0m5) built-in shell (ash)
Enter 'help' for a list of built-in commands.

Nokia-N900:~# rm -rf /and
rm: invalid option -- c
BusyBox v1.10.2 (Debian 3:1.10.2.legal-1osso30+0m5) multi-call binary

Usage: rm [OPTION]... FILE...

Nokia-N900:~# df -h
Filesystem Size Used Available Use% Mounted on
rootfs 227.8M 213.5M 10.0M 96% /
ubi0:rootfs 227.8M 213.5M 10.0M 96% /
tmpfs 1.0M 68.0k 956.0k 7% /tmp
tmpfs 256.0k 88.0k 168.0k 34% /var/run
none 10.0M 80.0k 9.9M 1% /dev
tmpfs 64.0M 4.0k 64.0M 0% /dev/shm
/dev/mmcblk0p2 2.0G 287.7M 1.6G 15% /home
/home/opt 2.0G 287.7M 1.6G 15% /opt
/opt/pymaemo/usr/lib/python2.5
2.0G 287.7M 1.6G 15% /usr/lib/python2.5
/opt/pymaemo/usr/share/pyshared
2.0G 287.7M 1.6G 15% /usr/share/pyshared
/opt/pymaemo/usr/lib/pyshared
2.0G 287.7M 1.6G 15% /usr/lib/pyshared
/opt/pymaemo/usr/share/python-support
2.0G 287.7M 1.6G 15% /usr/share/python-support
/opt/pymaemo/usr/lib/python-support
2.0G 287.7M 1.6G 15% /usr/lib/python-support
/dev/mmcblk0p1 27.0G 1.9G 25.1G 7% /home/user/MyDocs
/dev/mmcblk1p1 3.6G 32.0k 3.6G 0% /media/mmc1

so what now