External HDD - Damaged sectors and unable to copy files

RikyBGM

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Feb 8, 2015
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Hello everyone!

Until this June's first days my Toshiba external 2TB HDD never had any problems, but suddenly when I executed a (safe) software's setup I got the "Cyclic redundancy error".
Looking it up on Google I read some scary stuff, so I verified my HDD's status with HDD Sentinel where I found a 9% health and a huge number of sectors/clusters damaged.

After that I hoped for a logic error, and I was pretty sure about it since I NEVER let my HDD fall, be disconnected not properly or any other harmful stuff. I read that to verify a logic error I needed to check the number of damaged sectors in different days and see if it was the same, and unluckily it wasn't over a 2 days span.

Then I started to execute 3-4 scandisks/chkdsk without any results, so I proceeded to copy the files I needed but I discovered another sad message: "Unable to read from source file or disk" (or something like that). Basically I couldn't copy my files from the HDD to the PC (I also tried it with 3 different PCs including a Mac), but paradoxically I could watch videos and pictures from the HDD, without any problem, for their entirety. I also tried copying little amount of data at time but that didn't work too.

I haven't plugged my HDD in a couple of weeks now because I'm scared and I have absolutely no idea of what to do now and I really need those files that are still there (150 GB circa).

By the way if it can help somehow the HDD has always been with about 300/400 GB free out of 2 TB.

Guys I hope in a solution because I truly don't want to lose that data, huge thanks in advance.
 
Solution
Get this HD to a Data Recovery company/specialist, recommended in here or over in hddguru.com, today if not yesterday. IF there is any possibility of file recoveries in addition to what you already have recovered, a DR specialist is your best bet.
And, after everything is back to normal, days from now -- backup, backup, backup.
Well, assuming there's probably no more than 400 GB of data on that external drive and you have a 500 GB (or larger) drive available to connect internally to a PC, you could clone the contents of the Toshiba USBEHD to the internally-connected secondary drive and hopefully the data on the external drive will be able to be accessed from the internally-connected drive.

If you go that route you have to understand that there is a certain degree of risk involved as a result of the disk-cloning process. If you clone "garbage", garbage is what you get in many instances in the sense that the cloned data becomes even MORE corrupted. So you must understand the possibility of that risk.

Understand that the more you undertake this or that manipulation of a failing or defective drive the more difficult it becomes to salvage data on the disk.

You've stated that the data on that drive is data that you REALLY need. That being the case you should consider a commercial data recovery service; I'm sure I don't have to inform you that's a very expensive proposition but it's usually wise to make that decision early on before you undertake other user-type recovery efforts.

And for the future...if there's data on this or that drive that one "REALLY" needs, the only sensible approach is the create MULTIPLE backups of the data.
 

USAFRet

Titan
Moderator
CRC points to (not 100% but probably) physical error on the drive.

The more you mess with it with chkdsk etc....the closer it is to fully failing.

There are two things here...the data and the physical drive.
The only thing that matters is the data.
Copy whatever you can, off to another drive. Do this now. LAter, you can mess with the physical drive.

But...and I read this all the time...
"and I really need those files that are still there (150 GB circa)"

Data that lives on one drive may be considered to not exist at all. Drives die, simply because the Day of the Week had an E in it. Or Jupiter aligned with Mars. Or you got hit by some major virus. Or your house got hit by lightning.

Backup backup backup.
 

RikyBGM

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Feb 8, 2015
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Yes I know I've been a dumbass for not copying my files but I've never experienced data losses or anything like this and I truly don't know what to do anymore.
A friend of mine already suggested me to clone the HDD, but I need to contact a professional for that, am I right?
Sorry for the late answer
 

RikyBGM

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Feb 8, 2015
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Thanks for the help.
I am really angry over myself for not backing up, as I already said to ArtPog "I've never experienced data losses or anything like this" so I'm sure this will make me 10 times more careful in the future.
I already copied what I could, the rest is files that I can open and watch without any problem but I can't copy for the "Unable to read from source file or disk" error.
Do you think that cloning the HDD would be my only chance right now?
Sorry for the late answer
 

RolandJS

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Mar 10, 2017
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Get this HD to a Data Recovery company/specialist, recommended in here or over in hddguru.com, today if not yesterday. IF there is any possibility of file recoveries in addition to what you already have recovered, a DR specialist is your best bet.
And, after everything is back to normal, days from now -- backup, backup, backup.
 
Solution

RikyBGM

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Feb 8, 2015
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My PC aswell as my dad's or even my brother's Mac recognize the HDD and can show its content with a certain time of loading.
Do you think it's my only possibility? I'm willing to spend money for something so important.
 

RikyBGM

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Feb 8, 2015
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Thank you for the help, I'm seriously evaluating this option.
Also I'm really angry for not backing up that stuff.