I have an Level One NAS with 2 x 1 TB HDDs. I only use Disk 1 which had 120Gb of data. I thought I would mirror the disk so I could back the data up. I selected RAID 1 and my data on Disk 1 disappeared. I think Disk 1 was formatted with NTFS. Has the RAID 1 toggle reformatted the whole drive, or just the partition? Has it created a new header or over written the original header. Can I retrieve the old partition? None of the recovery programs seem to recover the partition. Help appreciated..