The computer that this is occurring in, has a 40GB boot drive (Debian) and two non-boot drives.
I have two identical 1.5TB drives (one partition on each), and one of them had data on it (other was empty). So I ran 'dd' to clone the one to the other, and then I had two identical drives. I wanted then, to build a software RAID array in Debian, and so I created it with one disk and labeled the other one as 'missing.' Added the second disk, and let it sync. And now, mounting and running 'ls' on the new array, I get:
# ls lost+found
fdisk /dev/md0 I get:
Disk /dev/md0: 1500.2 GB, 1500164849664 bytes 2 heads, 4 sectors/track, 366251184 cylinders, total 2930009472 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/md0 doesn't contain a valid partition table
Now, I don't entirely believe that all my data is "gone" since I never formatted the array, but I am saving my "panic" for tomorrow if nothing can be done.
How should I proceed?