NETGEAR ReadyNAS OS 6 Rack-Mount Storage Systems Installation Manual page 9

 To reformat previously formatted disks using RAIDar:
1. On a computer that is connected to the same LAN as your
ReadyNAS system, download and install the latest version of
RAIDar.
You can find the latest version of RAIDar at
http://www.netgear.com/raidar.
2. Launch RAIDar and select your system from the list of detected
devices.
3. Click the Format button.
The system reformats all installed disks for use with ReadyNAS OS 6.
When the reformatting process is complete, the reformatted disks are
ready to use with your system.
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