Re: Repairing corrupt volume information on external drive

Hi Shail,

In the message "[MAGNet] Repairing corrupt volume information on
external d", dated 2005-11-08, Shail Gala wrote:

>I have an external drive here that used to be mirrored with another
>recording backups of some of our workstations here. The machine
>crashed a few days ago and no volumes can be found on either of the
>two mirrored drives anymore. Every time I try to connect it to a
>different system, it comes up with an error stating that no volumes
>readable by Mac-OSX can be found on this disk. The drive was never
>used on anything except a Mac. I have tried different disk
>utilities including Disk Utility, Tech Tool Pro, Drive 10,
>Diskwarrior, etc. only to find that the only one that even sees the
>disk is Tech Tool (and finds no errors on it) but none of them can
>see the volume.
>
>Can someone please recommend a solution to recovering data from this drive.

   An additional software tool you might consider trying is Prosoft's
Data Rescue II <http://www.prosofteng.com/products/data_rescue.php>.
This tool been credited with salvaging data on some badly hosed,
otherwise un-mountable drives.

   Prosoft offers a trial version for download from their website. I
haven't checked to see what limitations there may be on that version,
but it may perhaps be worth looking at.

   Another option might be to contact tech support at the company
whose software or hardware was used to create and maintain the
mirrored volumes. Perhaps there are some recovery options specific
to their product that they may be able to suggest, as well.

   Finally, if the data is sufficiently valuable, a data recovery
service bureau might be a third - likely both expensive and effective
- option. One such company, among several suggested over the last
several years on this list and other campus computing support
maillists, is DriveSavers:

   http://tsw.berkeley.edu/ccrs/index.tpl?page=driversavers

Aron Roberts
Workstation Software Support Group

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Received on Tue Nov 8 12:04:12 2005