Recovering Data from a reformatted drive

Charles Swiger cswiger at
Thu Feb 26 13:43:20 PST 2004

On Feb 27, 2004, at 12:27 AM, Benjamin P. Keating wrote:
> I have a hard drive that had lots of important data on it. It was 
> reformatted and I have no backups (lesson learned). It was a ccd 
> mirror of two 100gig drives. Once the reformat of this ccd completed 
> the machine was shut down to prevent writing to this disk even more 
> so.

By this you mean, you used ccd to reformat the drive as part of a newly 
created RAID-1 mirror?

If you just newfs'ed the disk, most of the data blocks will still be 
intact and can be recovered (to some extent).  However, if you did 
create a RAID filesystem on the disk, you are out of luck.  The process 
of creating a RAID-1 or -5 volume involves syncronizing all of the 
disks, which will overwrite every sector on the drive.

I'm sorry that you lost data.


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