Previously formatted disks must appear on the NETGEAR Hardware Compatibility List, which is available at https://www.netgear.com/readynas-hcl.
If you want to use disks that were previously formatted for an operating system other than ReadyNAS OS 6 (for example, Windows or RAIDiator), you must reformat the disks.
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Note: If you try to use previously formatted disks in a system that does not contain any other disks, the system does not boot and ReadyCLOUD does not discover your device. If you use RAIDar to discover your device, RAIDar displays a "Corrupt Root" error message.
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If you try to use previously formatted disks in a system that already contains usable disks, the system does not reformat or use the previously formatted disks. Any data on the previously formatted disk remains intact.
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The following instructions describe how to reformat previously formatted disks in a ReadyNAS OS 6 system. This procedure assumes that the system does not contain any other disks.
To reformat previously formatted disks with a diskless ReadyNAS OS 6 system:
1. Gracefully shut down the storage system.
For information about how to gracefully shut down your ReadyNAS 2120 storage system, see the How do I power on and shut down my ReadyNAS 2120 storage system?
2. Install the disk.
For more information, see the How do I add a disk to my ReadyNAS 2120 storage system?
3. Reset the system to its factory default settings.
WARNING: This process erases all data and reformats all disks into a single X-RAID2 volume. If you want to preserve the data on the disks, you must back up the data to an external drive before using the disks in your ReadyNAS storage system.
For information about how to reset the system to its factory default settings, see the How do I access the boot menu on my ReadyNAS 2120 storage system?
The disk is reformatted and becomes available for use with your ReadyNAS OS 6 storage system.