ReadyNas Duo v1 - what does these lights mean?

No disks detected.

LED blink behavior for 2 disk systems is three quick blinks of all disk LEDs and the backup LED, followed by a 1 second delay, followed by a number of slow blinks. The number of slow blinks will be the error code. Current error codes: 1 – Vendor mismatch 2 – No disks detected 3 – Bad contents on root partition of disks 4 – Flash error 5 – Unsupported RAID configuration

Thanks! I have a new 1tb drive in bay #1 and nothing in #2. When I first put in the new drive my readynas started to install. Some 60 hours later I stopped the machine and tried to do a factory reset. Now I can't even find the disk. Any ideas?

If you have the ability to connect the drive to a PC (via USB adapter or SATA), you should test it with vendor tools (seatools for seagate, lifeguard for western digital).

Is this your initial install?

Thanks, Stephen. I don't have a SATA reader but I'll try to get one or install the drive into an old pc that I have tomorrow. No, in December, 2012 this saga started when both of my drives died. It's a very long and sad story that would take me much too long to recite hear. Suffice to say that I'm a bit frustrated.
I bought this new drive last week and installed it in drive #1. That's when it tried to install but after 60 hours I unplugged the machine. Then I discovered that the machine is duo v1 rather than v2. So, now the drive can't be recognized with or without #2 drive added. (I have another new drive that was not Raid that I'm using for the #2 drive to try to get machine to work. I'm grasping at straws now).
Anyway, so here we are. I'll try to find out if the drives are viable and get back to you on the results ASAP. Of course, I'm a bit nervous that something is wrong with my chassis as I've had to replace the last 2 as they were faulty and I'm concerned that the chassis is causing damage to the new drives that I've put in. But I'll try to keep faith and continue with Netgear support's advice (I also have an active case going #21158408)
Alan