fvdw gone after reboot

Hi all,
I installed the latest fvdw on my lacie, only the first disk plugged in, this seemed to work. Upon reinserting the other disks (2 and 5, 3 and 4 are unused), and booting the nas up again, I reverted to the lacie firmware.
No big deal I figured, the original firmware was probably on one of those disks. I booted again, with only the first disk inserted: again the lacie firmware.
Weird...
Decided to do a reinstall, with all 3 disks plugged in. Seems to be fine. Just on the last step (use "reboot -f" to reboot), telnet gets disconnected, but the nas seems to stay on. I shut it down using the switch on the rear, and turned it back on. Again, I reboot to the lacie firmware.
I couldn't find another topic with this problem, but what could be the cause? The fvdw install seems to go fine, and the first time (with just one disk) I actually booted in fvdw and installed a few things etc.
Apart from this issue, the firmware seems awesome. It gives this crappy lacie a second life, bringing it on par with synologies etc, possibly even better!
I installed the latest fvdw on my lacie, only the first disk plugged in, this seemed to work. Upon reinserting the other disks (2 and 5, 3 and 4 are unused), and booting the nas up again, I reverted to the lacie firmware.
No big deal I figured, the original firmware was probably on one of those disks. I booted again, with only the first disk inserted: again the lacie firmware.
Weird...
Decided to do a reinstall, with all 3 disks plugged in. Seems to be fine. Just on the last step (use "reboot -f" to reboot), telnet gets disconnected, but the nas seems to stay on. I shut it down using the switch on the rear, and turned it back on. Again, I reboot to the lacie firmware.
I couldn't find another topic with this problem, but what could be the cause? The fvdw install seems to go fine, and the first time (with just one disk) I actually booted in fvdw and installed a few things etc.
Apart from this issue, the firmware seems awesome. It gives this crappy lacie a second life, bringing it on par with synologies etc, possibly even better!