MultiDrive – free backup, clone & wipe disk utility from Atola Technology

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 2 posts ] 
Author Message
 Post subject: Recovery of WD 750GB USB3 - Passport
PostPosted: April 7th, 2011, 10:23 
Offline

Joined: April 7th, 2011, 9:57
Posts: 1
Location: Shreveport, LA
Hi all, could use some help!

I got my P8P67A (B3 revision) motherboard in a couple of weeks ago after the Intel recall, and was able to finally build out my new box after waiting for a couple of months with my 2600K processor serving as a paperweight. During the downtime waiting for my new system ,I had backed up and removed a bunch of high res pictures (2 years worth!) from my old computer and backed them up to an external WD 750GB Passport - USB3 drive. The drive the pictures were stored on were at around 90% capacity, and since then they have been clobbered with other data, so a recovery is pretty much impossible on that drive, which is where I looked first.

I have a question on what my best approach would be for a recovery given the following process on:

I had purchased a few SATA2 750GB drives to run RAID 5 on, and one SATA3 750GB which was going to be a performance disk for my new rig. I was using the SATA3 my old computer briefly for extra storage during the wait, as it was the first one I had ordered.. After getting Windows installed on the new computer, I wanted to clean up the 750GB SATA3 drive, and create a few partitions. Unfortunately I selected the USB drive during the diskpart operations, and lost the last two years worth of pictures of my family.. Wife is not happy, our 4 year old won't have any pictures for his school projects, and she was mad about the thousand bucks I had just spent on the computer already! :oops:

The following scenario describes what I think I did when I performed the erase on the usb:

diskpart
select disk 4
delete part 1
clean
create partition primary size=20000
format
ctrl-c (after about 8 secs)
/curse

Any advise? Complete recovery on EASUS Data Recovery Wizard Pro failed to turn up the missing files.

I've got the following systems available:
Windows XP
Windows7 64
Ubuntu - Jaunty

If the answer is "send it to a DR pro" that is fine. I will just need to wait a month or so, but any idea what price I would be looking at?

Thanks,
-John


Top
 Profile  
 
 Post subject: Re: Recovery of WD 750GB USB3 - Passport
PostPosted: April 7th, 2011, 12:38 
Offline

Joined: May 6th, 2008, 22:53
Posts: 2138
Location: England
Depending on which Windows version you were using, and (if it was Win7, whether diskpart invokes a full or quick version "format"), it seems you've lost the partition table, some filesystem metadata, and possibly (depending on the answer above) whatever 8s of zero-fill might have overwritten.

I'd suggest that the first step is for you to clone that disk - I'd probably clone it twice, so that I've got a duplicate clone (in case the original disk were to die for any reason), but others may consider that duplication to be over-the-top. :) Since there is currently no suggestion of physical issues, then I see no reason why you couldn't leave that disk in its USB enclosure and clone it from that (onto either direct-attached or USB-attached targets).

For maximum choice of recovery software that you can use later, then cloning to another raw disk is probably best; next best would be cloning to an uncompressed image file on another disk; most restrictive would be cloning to a compressed image file on another disk (since not all recovery software will read such a file). There's a choice of free cloning software possibilities (Windows & Linux), since the source disk is likely to read OK - have a search here for cloning software for some ideas.

Then you can do things with your "working clone" disk, like investigating whether the first xMB have been zero-filled or not with a hex editor; trying different recovery software (free and paid); etc. etc., and you can still go back to either the original disk or a duplicate of the clone, if you accidently change something on that clone disk. Just because one piece of logical recovery software didn't show your desired files, doesn't mean that a different algorithm in different s/w won't do so - there are many different pieces of s/w you can try, but do that on a clone IMHO. :)

You need yet another disk (in most cases, unless you're using more complex & confusing recovery configurations), to hold the recovered files from any logical recovery s/w. Also don't assume that just because recovery s/w shows a thumbnail photo preview which is OK, that the recovered photo will be OK when viewed full size - check all recovered files visually, before deciding that you've definitely got a successful recovery.

So there are some ideas for you - obviously other approaches are possible, and different people will have different opinions. Some of the recovery software vendors might also make some suggestions to you. :)


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 2 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 47 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group