Edward Diener wrote:
> Can any of the data in the failed hard drive be recovered ? I do have
> some backup data I would love to retrieve if I could. Are there
> low-level hard drive data recovery tools, which can read various
> backed-up partition types ( mostly NTFS ) and recover the data, even if
> the hard drive no longer appears to be partitioned or even show up.
DiskInternals Partition Recovery
http://www.diskinternals.com/
It's not cheap at $140 but it worked when to recover my files when the
freebies or cheapies failed (Recuva, TestDisk, Minitool, and some others
that I don't remember now) even when they did a deep scan since the
quick scan rarely found anything. Not only had I lost the partition
table but new partitions had been defined plus a format started that I
aborted. I had picked the wrong hard disk to repartition and reformat.
It wasn't just to have the product discover where were the old partition
boundaries but also recover the data files from there. Obviously you
needed somewhere else to recover them.
Easeus has a trial product for partition recovery that was free
(
http://www.easeus.com/datarecoverywizard/free-data-recovery-software.htm)
but you could only recover up to 1GB maximum. To recover more, you had
to buy it ($65-$105). You get to select what to recover so you can pick
the critical files and leave the dross behind; however, for large hard
disks, this isn't much but I do know that product did work, too. It did
recover the files that I selected.
For these products to work, I had to use the deep scan and took over an
hour to look at a 500GB SATA2 hard disk. The quick scan only took about
15 minutes but it couldn't find the files. It could restore the old
partitions but to undo the format required a deep scan. While more
expensive, I've seen DiskInternals used at companies by their helpdesk
to recover files from logically corrupted hard disks. For physically
damaged hard disks, you'll need to send it to a lab that'll probably
cost $1500-$4000.
My understanding of the deep scan is that these product understand the
internal formatting of many file types. It rebuilds its own file table
by finding documents that comply with the format for those documents.
That means it won't be able to retrieve files for which it has no
understanding of their internals. They worked for all my files so they
seem to have a huge list of supported file types they can detect to
retrieve them.