At 09:08 PM 8/9/07 -0700, Richard W. Ernst wrote:
Lief Hendrickson wrote:
At 04:57 PM 8/9/07 -0700, you wrote:
On 8/9/07, Lief Hendrickson <[EMAIL PROTECTED]> wrote:
> I have a 80 GB hard drive that was in an external USB enclosure. It
> stopped working. I put the drive in a different enclosure and
> connected. The computer recognized that there is a USB drive but says it
> is unformatted. Can anyone help with data revovery? Thanks.
>
Explain further "it stopped working".
Can you tell whether the disk is spinning? Listen for bearing noises,
feel for vibration, try to detect gyroscopic effects.
carl
--
carl lowenstein marine physical lab u.c. san diego
[EMAIL PROTECTED]
It physically works fine as far as I can tell based on comparing the
running sound to other hard drives. I should have said it stopped being
accessible. I put it in another USB hard drive enclosure - after
verifying that the USB enclosure works with another hard drive. The
computer recognized there is a hard drive present, but it can not access
it. I tried it under windows 2000 - I went to a DOS prompt and entered
the disk letter and got a message saying the disk is unformatted and
asking me if I want to format it. I wonder if something at the beginning
of the disk has become corrupted making it look like it's unformatted and
if so the problem is how to recover formatting (partition table
problem???) without losing all the data. Any ideas or sources of
expertise would be appreciated.
I'd try physically mounting it IN the computer that you want to access it,
vs. in another USB device. More control would be available, including dd
for a backup before diagnostics.
I gather dd is a way to copy what is on the hard drive. The bad hard drive
is 80 GB. Would I need to copy at the byte level to another hard drive
with 80 GB free space? which means it would be >80 GB to also have space
for linux.
or could I boot to a Linux cd ( I have Knoppix 3.6 bootable cd if that
would work) with two hard drives connected as IDE drives inside the
computer? (i. e. the problem hard drive and a second hard drive to become
a duplicate) I do have another 80 GB hard drive with stuff I'll never
use. Would it be possible to mirror everything from the problem hard drive
to the other one? What would the dd command line be (i.e. all the command
line options)? thanks.
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