Note: Make sure "MacFUSE Compatibility Layer" was selected when you installed OSXFuse.
$ fuse-ext2 <device|image> <mountpoint> [-o option[,...]] options: ro : mount read only force: mount read/write allow_others: allow other users to access debug: noisy debug output $ mount -t fuse-ext2 /dev/sda2 /mnt/sda2
Altough, write support is available (and it is pretty stable) please do not mount your filesystems with write support unless you do not have anything to loose.
Write support is disabled by default, to enable write functionality for all volumes run the following command in Terminal (one line). You will be asked to enter your admin password.:
sudo sed -e 's/OPTIONS="auto_xattr,defer_permissions"/OPTIONS="auto_xattr,defer_permissions,rw+"/' -i.orig /System/Library/Filesystems/fuse-ext2.fs/fuse-ext2.util