Various details on Ultra 4

johannesomega wrote:

Alright I'll make sure to do a dd of the internal USB before doing anything :-) I'm a bit lost how to get anything else other than RAIDiator running though, since I can't seem to modify boot order in BIOS (via serial), and I can't mount the internal USB to replace kernel images etc.. is there a way that I'm missing? :-/ (maybe answering my own question, but I did see a line printed to the serial console when booting the NAS with the backup button pressed and a Debian live USB stick in the front slot.. unfortunately after that line nothing else happened).

If yours work the same as mine, just plug in an ext2-formatted USB stick and remove all drives. Connect to serial, and you've got a console.

You can also try the alternate method:
Power down the ReadyNAS, insert the USB flash device, and depress the power button on the front for approximately 20 secs – you'll see all the disk LEDs blink once at 5 secs, 10 secs, 15 secs, and 20 secs. Release the button right after the 4th blink. This will start the USB boot recovery process. Once the fan and the lights shut off and the lcd screen displays “Attemp”, press the power button and the unit will boot up normally.