Libra Bricked my Libra by tinlering

I though it would be fun to format my data partition btrfs to use compression.

First I ssh'd into the root partition and changed the entries in /etc/initd/rcS from vfat to btrfs.

Then I backed up my data and formatted the vfat data partition to btrfs. I restored the data and removed the device from the pc.

Then it bricked.

There is a exclamation mark the screen. When plugged in viz USB, 'fdisk -l' does not even see the disk.

When I hold down power, the screen flashes white for a moment then goes back to the exclamation mark.

Advice?