So reading between the lines, it sounds like the HP device runs Windows, yes?
Chances are it uses NTFS then. However, whether or not it uses "dynamic disks"
is unknown -- my guess is that's probably what it uses. Really don't know at this point though. As you can see from the documentation (bottom of page), there are multiple models/methods available. If striped (that means RAID-0) then the data is lost (n+0 bytes would be on the 1TB disk, n+1 bytes would be on the 750GB disk). If spanned (concatenated), there may be recoverable data but I'm not sure. if RAID-5, the data is lost. If mirrored (RAID-1), I would say the data is probably recoverable.--
Making life hard for others since 1977.
I speak for myself and not my employer/affiliates of my employer.