Drive recovery using Linux??
homgirl177 at yahoo.com
Wed Mar 5 20:43:51 UTC 2008
i cant get on my computer losdt user password and dont know how to reset it can you help with a blow by blow account .
Bart Silverstrim <bsilver at chrononomicon.com> wrote: Andrew Zajac wrote:
>> The problem I'm wondering about (the image from dd is almost done) is
>> the filesystem...the mount example is trying ext3, when I tried mounting
>> the drive physically fdisk couldn't determine the existence of a
>> partition table, and no filesystem.
>> Any way to extract if there was a filesystem and it's just damaged?
> If dd completed without error, then that's pretty good. Tools like
> rr_rescue and dd-rhelp (or the even better gnu dddrescue) are used to
> make an image of a failing drive while ignoring read errors. If dd
> completed on its own, then the drive is probably okay.
DD completed. I was totally mistaken on the size, though; it was a 160
gig drive. Took awhile to get done...
> partition table is gone is a mystery. Could the DVR have gone haywire
> and formatted itself?
No idea. I was just handed the drive and asked to look at it. I was
then told that it wasn't worth my time to keep looking at it, so if it
was nothing obvious then they were writing it off.
> If you are confident that the image you made is intact, you can try
> working on the physical drive to fix the partition table. I say this
> because you imaged the whole device. You cannot mount the whole
> device, but only the filesystem on the first partition of the device.
> I don't know what kind of partition table or filesystem your DVR uses.
No partitions were found. I did a dd if=/dev/hda
of=/mnt/win/myshare/driveimage.img and it had completed fine (I'm never
sure when to dig through finding what blocksize to use, but since it
didn't thrown an error I didn't worry about it).
The utility testdisk found 2 HFS partitions, but i suspected they were
a) it said they were unrecoverable
b) the sizes were in the terabyte range, thus throwing another error
about being too darn large for the size of the drive
c) HFS on a Panasonic DVR device? (this DVR is recording security
cameras, not episodes of LOST)
So...I doubt it.
> Testdisk or parted can detect and add partitions found on the disk
> that are not part of the partition table. You can try that.
Whoops, replied too soon :-)
> If you are unable to detect or guess what partition goes where, you
> can always try to data-carve the files from the raw image or device.
> Photorec and foremost are very good at doing that. You can data
> carve a lot of the data on a disk even after it has been formatted.
I tried foremost with the "all" switch handed to it...nothing found.
There's something on the device, because strings /dev/hda |more found
patterns to report on the dd image.
I guess the higher up doesn't want more time spent on recovering it, though.
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