I had some data in my external hard drive (eHD), and performed a dd to backup my ubuntu filesystem onto the eHD.
I thought it would maintain the data that was previously there, plus the backup.
What i got:
I can only see the filesystem which i backed-up, and no signal of my previous data. However, when I see the portion of the eHD occupied, it shows as if the files are still there, that is, 500 Gb of my old data, plus my filesystem which is 300 Gb. So in total I have 800 Gb of a 1 Tb disk occupied, so I'm guessing the data is somewhere, I just can't see it.
Any ideas on how to recover the data?