Accidentally DD’d first few megs of external hdd
- Thread starter gigatexal
- Start date
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Doh! DD is pretty much irreversible. Even if you were to recover the directory structure, the data itself is gone
I've used this Disk Recovery Software and Hard Drive Recovery tool for Windows, Mac, and Linux in the past with good results.
The external drive was the backup device which is why I’m in the dog house on this.
Dude, always, ALWAYS do a read from the device so that you can see and verify exactly which device is active before you ever put that of=/dev/sdx in there =)
You can probably still scrape the drive and get some data back, but anything on the front of that drive is toast.
You can probably still scrape the drive and get some data back, but anything on the front of that drive is toast.
I know I’ve been using Linux for years and I screwed up here. I’ll try the suggested methods of recovery.
Can you image copy to another hdd? That would increase your ability to tinker with it.
I see some suggestions/story on resurrecting hfs+ here:
How to repair a corrupted HFS+ partition from a damaged hard-disk?
Perhaps there's an alternate superblock still living on the drive.
Good luck.
I see some suggestions/story on resurrecting hfs+ here:
How to repair a corrupted HFS+ partition from a damaged hard-disk?
Perhaps there's an alternate superblock still living on the drive.
Good luck.
I've not tried it with HFS filesystems, but when I accidentally did the same thing and dd'd the first few MBs of a drive once I successfully used testdisk to scan and repair it with minimal loss of data (couple of small files were hosed IIRC, the rest was fine).
Naturally any attempts to repair the partition table can be potentially destructive so generally it's a good idea to create an image of the disc in question and perform the recovery operations on that if possible. If you can handle the time taken, disc space used, and the level of irony, dd the drive into an image file and point yer tools at that instead of the actual disc so you can test if it works first.
Naturally any attempts to repair the partition table can be potentially destructive so generally it's a good idea to create an image of the disc in question and perform the recovery operations on that if possible. If you can handle the time taken, disc space used, and the level of irony, dd the drive into an image file and point yer tools at that instead of the actual disc so you can test if it works first.