my question is with command mount /dev/ext2 or /dev/ext3 /mnt/n900sd what happened with you and where did you get ext2 or 3 in /dev directory there is no ext3 or 2 (maybe created them?)
Note that you need to replace /dev/xxx with the formatted ext2|3 partition on the N900 or microSD card that you intend to use
/dev/mmcblk0p1 /dev/mmcblk0p2 /dev/mmcblk0p3 /dev/mmcblk1p1
beleive me i'm not so noob but how to do as andrew says?