Repairing a partition on ext drive

Grant

Honorary Master
Joined
Mar 27, 2007
Messages
60,604
Someone pulled the incorrect usb cable out of a laptop of mine and disconnected and ext hard drive by mistake.

Drive will not mount and disk utility is unable to repair.
Disk Warrior also is unable to repair.
(drive is fat32)

hard drive bad.png

So, it would appear the partition table (correct term ?) is damaged.

Various data recovery programs are able to find all the files contained on the drive, but are going to take a long long time to recover the data.

I have used Paragon Hard Drive Manager to repair a mac partition via boot camp previously:
http://mybroadband.co.za/vb/showthr...-partition?p=11948349&viewfull=1#post11948349

Is there a mac application that can do this repair ?
 

GreGorGy

BULLSFAN
Joined
Jan 18, 2005
Messages
15,289
My go-to would have been Disk Warrior here. I have found a rather strange circumstance where DW on an older Intel or even a PPC machine yields better results than I have experienced with newer OSes.
 

Grant

Honorary Master
Joined
Mar 27, 2007
Messages
60,604
Not that I know of but would like to find out too. ST3000DM001, terribly unreliable drives too so hope you have a backup.

there are other drives with everything backed up - different drives for different files types.
this one over time accumulated everything - so it's no biggie
 

Grant

Honorary Master
Joined
Mar 27, 2007
Messages
60,604
I can assist via teamviewer if you want.

ta - i may scream for you later.
at this point i am not even sure if the buggered drive is in the car or office, or even here at home

i'm fiddling about with test disk on an old ext drive.
partitioned it as mbr, and deliberately formatted it as "empty space".

so now i have test disk looking for lost partitions (it was previously mbr with fat32 partition)

Screen shot 2015-10-03 at 2.27.39 PM.png

it's taking quite a while just on this 500GB drive, lord knows how long on a 3TB drive.
 

Totempole

Expert Member
Joined
Sep 21, 2011
Messages
4,847
Easeus Data recovery will almost certainly be able to recover all of your data, not free though. A similar thing happened to me recently with a 4TB Seagate External.

You most probably won't be able to recover the partition, but I have little doubt that you'll be able to recover the files.

PM me if you need any help.


... I should mention that the recovery took almost two days though.
 

Lord Flacko

Expert Member
Joined
Nov 14, 2012
Messages
1,568
I've used Stellar Phoenix Data Recovery in the past to force volumes to mount. I don't know how it does it but that program can mount any volume.
 

ponder

Honorary Master
Joined
Jan 22, 2005
Messages
92,823
If there were previous partitions they will be listed. If that's the correct one recover it so it writes it back to the drive.
 

Grant

Honorary Master
Joined
Mar 27, 2007
Messages
60,604
If there were previous partitions they will be listed. If that's the correct one recover it so it writes it back to the drive.

that certainly is the correct one, even named correctly:
http://www.lacie.com/gb/en/products/desktop-storage/porsche-design-desktop-mac/

the data recovery program took a full day to scan the drive, and found everything within that partition.
however, it will take even longer to retrieve the data, hence me looking for a way to repair the partition structure so it is able to mount again
 

Vohligh

Well-Known Member
Joined
Sep 15, 2011
Messages
371
I used Partition Table Doctor a long time ago to rebuild corrupted partitions. Another useful (manual) tool for fixing partitions is Winhex.
 
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