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Windows 7: External hard drive not accessible - how do I recover files

28 Sep 2015   #11
CKWD

Windows 7 Home Premium x64
 
 

Hi again!

Sorry I couldn't answer earlier, I'm not online on the weekends.

The Device Manager screenshot shows a few USB connected devices, including a 500GB WD Caviar Blue, which is your internal drive. Still, the other USB connected external drive (not a pen drive or such) is the HDD inside the Iomega. That external giving you a “bad drive”-status in other software only proves it may not be fixable. :/

I can't be also sure if it will allow you to perform a clone, it may be too damaged. I hope not though. When you do that you could also try performing a data recovery from the drive using a software in your home environment. If the data is too important then data recovery would be the next step.

Very often also getting the drive outside of the enclosure may not be such a good idea. For that you need to check your HDD specs and your warranty status.

Good luck!

CK_WD


My System SpecsSystem Spec
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29 Sep 2015   #12
BoyThisHurts

Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

Okay I have a new external drive, it's a Seagate 2TB USB drive. Are there instructions for ddrescue specifically for this situation considering the failing drive is NOT my main bootable drive? Sorry but new to cloning hard drives

There is quite alot of info on here: Best method/tool for cloning a failing HDD for Data Recovery?

CKWD: not worried about fixing old drive, have a replacement now, just want to see if I can recover any data from the old one. Not expecting much but hey who knows? You are correct on identifying the drives, the 500GB is the internal hard drive and the other is the USB external drive that failed. The four other USB "drives" are actually my card reader ports hardwired into the front of my CPU tower. I would have to disassemble the tower to get them disconnected and since I already know what they are I don't see any reason to do that.

Thank you!
My System SpecsSystem Spec
30 Sep 2015   #13
CKWD

Windows 7 Home Premium x64
 
 

You shouldn't have any problems with cloning, it doesn't also matter if your HDD is not the boot one, it makes things even easier, in my opinion.

Since I am a WD representative, I can't detail non-WD software that freely, but you should be able to find a guide for the cloning program you are to be using. Instructions usually are not so complicated, you need the drive you're cloning from and the destination drive, you want to clone on.

Good luck!

CK_WD
My System SpecsSystem Spec
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30 Sep 2015   #14
jumanji

Windows 7 Home Premium 32 bit
 
 

Please wait for further instructions on cloning.
My System SpecsSystem Spec
30 Sep 2015   #15
jumanji

Windows 7 Home Premium 32 bit
 
 

Download SystemRescueCd-x86-4.6.0 (446 MiB) http://www.sysresccd.org/Download This is an ISO.

Download Rufus 2.4 (825 KB) https://rufus.akeo.ie/

Create your bootable SystemRescueCD pen drive using Rufus. ( Backup all data on the pendrive elsewhere since it will be lost when Rufus formats your pen drive and writes the ISO)

External hard drive not accessible - how do I recover files-30-09-2015-13-12-10.jpg

When you are ready let me know.


My System SpecsSystem Spec
30 Sep 2015   #16
BoyThisHurts

Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

Okay I have created the bootable pen drive. Ready to proceed.
My System SpecsSystem Spec
30 Sep 2015   #17
jumanji

Windows 7 Home Premium 32 bit
 
 

1. Using the onetime bootmenu boot your computer with that pen drive with your source disk (your failing disk) and a destination disk (formatted empty disk of capacity not less than that of your source disk) plugged in.

2. You will get a bootmenu with "SystemRescueCD - default options"- already highlighted. Just press ENTER and wait for the booting process to continue.It will end up with the prompt
" root@sysreccd /root %"

3.Against the prompt type: fdisk -l and press enter. This will list all your four drives - your 500GB System drive, your 1TB failing source drive to be cloned, your new 2TB destination drive, as also your SystemRescueCD pendrive. Note the nomenclature of your failing 1TB source disk and 2TB destination disk.

Note: fdisk[Space]-l ( l for list. It is not 1.)

(Example: I wanted to clone my 30GB pendrive with data onto my new 750GB Seagate external HDD. My failing 30GB Source pendrive was listed as "Disk /dev/sdd 30.2GiB 32463912960 bytes 63406089 sectors." My destination drive as "Disk /dev/sde 698.7GiB 750156373504 bytes 1465149167 sectors." From the size I have determined that my source disk is sdd and destination disk is sde. In your case it could be different. Note down the correct nomenclature of your 1TB failing source disk and 2TB destination HDD)

4. Next against the command prompt type: ddrescue -d -f -r3 -v /dev/sdb /dev/sdc recovery.log

Press enter

Note:
1. ddrescue[space]-d[space]-f[space]-r3[space]-v[space]/dev/sdb[space]/dev/sdc[space]recovery.log

2.Replace sdb with the correct device nomenclature of your 1TB failing Source disk and sdc with the correct device nomenclature of your 2TB Destination drive as obtained in step 3.

( From the example I had given above, it will be in my case
ddrescue -d -f -r3 -v /dev/sdd /dev/sde recovery.log )

5. Sit back and relax. The cloning process may take hours to days depending upon how bad your Source disk is. If your data is important patience is the key and the wait worth it.

In the cloning process itself it will go through cloning all the good sectors first and then try to recover the bad sectors one by one trying it 3 times (r3 option) before giving up on it.

Note: For the duration of ddrescue run you will not be able to use your PC. Leave it alone. When it encounters difficult bad sectors your PC may appear to have frozen but it is not. Do not terminate ddrescue. Just wait. It may continue after sometime.

First run should be smooth as it clones only the good sectors.

Only the second and third pass where it tries to recover the data from the bad sectors will take time.

Even if ddrescue terminates during the second or third pass unable to deal with the worst bad sectors, inasmuch as the first pass has cloned all the good sectors, you should be able to see the data in good sectors.
My System SpecsSystem Spec
05 Oct 2015   #18
BoyThisHurts

Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

I was able to start ddrescue and it recovered very small amount, 1400 MBS or so of 1TB drive. It is cloning on 3rd pass now and taking very long time. I started 2 days ago and it is only about 10 percent complete. Am I able to pause the cloning process? And would I be able to restart the process? And what happens if I lose power while it is running... would I have to restart?
My System SpecsSystem Spec
05 Oct 2015   #19
jumanji

Windows 7 Home Premium 32 bit
 
 

If you lose power and your computer shuts down, you will need to start afresh again. But in USA power interruption is very rare.

Let it run and complete the third pass.And finally I think you should be happy with whatever it could recover.

(If you want to reboot the computer the log file should be written to a third drive. I don't know what commands should be given for that and that is what is being discussed on the other thread. That is why I go with simple commands and the known devil. ( My post #57 in Best method/tool for cloning a failing HDD for Data Recovery?)

You can also check the first successful cloning here by dragonballz4.See whether you can follow the procedure adopted by him where he wrote the log file to a third drive ( to his laptop partition.)
My System SpecsSystem Spec
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 External hard drive not accessible - how do I recover files




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