To mount ext2fs filesystems under FreeBSD, you first have to build a new kernel with ext2fs support. Read the FreeBSD handbook to learn how to do that. Put the line
options "EXT2FS"in your kernel configuration file for the new kernel.
When you have booted with the new kernel, you can mount an ext2fs filesystem by giving a command like:
mount -t ext2fs /dev/wd0s3 /mnt
Due to a bug in FreeBSD 2.2.8 and earlier you will have to unmount all ext2fs
filesystems before you shut down FreeBSD if you are using these any of
these versions. If you shut down FreeBSD with an ext2fs filesystem mounted,
FreeBSD cannot sync the UFS filesystems. This results in fsck
being run
the next time FreeBSD is booted. You can work around this bug by putting the
line:
umount -a -t ext2fsin the
/etc/rc.shutdown
file. The bug has been fixed in FreeBSD 3.x.