Configuration files for some services have explicit references to /mnt/HD_xx. To keep the ffp-reloaded environment compatible, you can create the mount points and add entries to /ffp/etc/fstab. Example for /mnt/HD_a2:

# mkdir -p /mnt/HD_a2
# echo '/dev/sda2       /mnt/HD_a2      ext2    defaults        0       0' >>/ffp/etc/fstab

The methodology of reloading the Linux kernel does work from the v1.05 custom firmware, FrodoII_firmware, which has telnet turned on inside the firmware.