Debian Squeeze/Wheezy on Ultra 2?

Just to be complete: thanks to great 'external' help my problem was fixed within half a day.
For anyone who likes to try: backup the internal flash first (not just the partition but the whole flash). dd if=/dev/<flashdev> of=/c/flash_backup.img and copy it to a safe location (outside your nas, on a usb stick or something like that) before you start.
And just to be sure: also backup the VPD file that resides on the internal flash (also to a loaction outside your nas).

I ended up installing Wheezy on a separate harddisk while maintaining the integrity of RAIDiator.

I added a new item the the boot menu

label WheezyNas
kernel vmlinuz.64
append initrd=initrd64.img root=/dev/sda1 console=ttyS0

and copied the Wheezy kernel and initrd to the internal flash (renamed them to get an 8.3 filename, don't know whether that's necessary or not).

Then, by using the boot menu, I selected the new label which to my surprise was supported by the bios with it's own LED combo (both drive LEDs were used for the new label) and booted into Wheezy.
After confirming all worked, I changed the default bootlabel to 'WheezyNas'.

I now have a semi-dualboot system that boots Wheezy by default but when I want RAIDiator back, I can change the disks and just boot into RAIDiator (and change the default boot label back to 'Normal' if I want to keep RAIDiator).

The only thing missing in Wheezy is the drive activity LEDs.

/edit
^^^ which make me wonder whether there is any documentation 'somewhere' regarding the way the drive LEDs are controlled by RAIDiator or ReadynasOS... :roll: