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Failing HDD, NEED HELP to copy files off of it.

post #1 of 17
7/15/12 at 7:04pm
Thread Starter 
Hey guys, got a 2TB HDD that apparently has reallocated sectors according to CrystalDiskInfo. Been trying to copy the files to another HDD and it seems to get stuck on certain files.

I'm currently using TeraCopy to copy the files to another HDD, which is working, but on some files it slows down to a crawl, from 90 MB/s it goes down to 50 KB/s at times. I assume this is because of the HDD failing? It's taking hours to copy HD files like this. If I wait it does actually copy the file. Is that normal? Does that mean the files are not corrupted?

Is there a program that I can use that skips the slow/bad files so the copy doesn't go to a crawl and take hours? or just another copy program that might work better?

Not sure what to do as I've never had a bad HDD before. Any help or info you guys can give me if greatly appreciated. Thanks.
Edited by Ice009 - 7/15/12 at 7:31pm
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post #2 of 17
7/15/12 at 7:47pm
Quote:
Originally Posted by Ice009 View Post

I'm currently using TeraCopy to copy the files to another HDD, which is working, but on some files it slows down to a crawl, from 90 MB/s it goes down to 50 KB/s at times. I assume this is because of the HDD failing? It's taking hours to copy HD files like this. If I wait it does actually copy the file. Is that normal? Does that mean the files are not corrupted?
That's common among failing drives. Whenever it encounters a bad sector it'll try to recover the information for up to 30 seconds. If it fails, your file gets corrupted. If it succeeds, your file copies properly, and all you see is a huge performance dip.

All we see is corrupted or uncorrupted, but internally the drive sees a whole lot of different states. The magnetism could be degrading in certain sectors, but the drive will try hard to get at that info. Every sector has ECC info, so it can tell if the information it reads is correct or not. If it isn't, it'll keep trying until it gets it. (max 30 seconds)

http://en.wikipedia.org/wiki/Error_Control_Coding
Quote:
Originally Posted by Ice009 View Post

Is there a program that I can use that skips the slow/bad files so the copy doesn't go to a crawl and take hours? or just another copy program that might work better?
TeraCopy can skip files if you click the skip button. I don't know of anything automated that does it for you.

If you have an identically sized drive (or larger) there is the option of copying the whole drive's data over to another. That often works better than seeking to individual files - it can just start reading sequentially and keep going, until it gets it all.

The downside is it could take just as long (or longer), since it copies the entire drive surface - not just files. Also, no skip button. wink.gif

http://www.overclock.net/t/1267428/i-dropped-external-hdd-not-working-but-windows-detects-it/0_100#post_17435327
Quote:
Originally Posted by Ice009 View Post

Not sure what to do as I've never had a bad HDD before. Any help or info you guys can give me if greatly appreciated. Thanks.
It sounds like you're doing the right thing - getting your data off as quickly as you can! That's about all that you can do...


Edit: Copying an entire 2TB HDD's contents from one drive to another could take half a day on a healthy drive if there's enough small files on it. You'll have to be patient with an underperforming drive.
Edited by Kramy - 7/15/12 at 7:53pm
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post #3 of 17
7/15/12 at 7:56pm
I used Easeus recovery to back up my friend's broken hard drive before. It took a whole night to scan and back up but it works.
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post #4 of 17
7/15/12 at 8:01pm
Sounds exactly what a failing drive would do. Best to get your data off asap! I also have Teracopy and its a must have program IMO thumb.gif
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post #5 of 17
7/15/12 at 8:12pm
Thread Starter 
Quote:
Originally Posted by Kramy View Post

That's common among failing drives. Whenever it encounters a bad sector it'll try to recover the information for up to 30 seconds. If it fails, your file gets corrupted. If it succeeds, your file copies properly, and all you see is a huge performance dip.
All we see is corrupted or uncorrupted, but internally the drive sees a whole lot of different states. The magnetism could be degrading in certain sectors, but the drive will try hard to get at that info. Every sector has ECC info, so it can tell if the information it reads is correct or not. If it isn't, it'll keep trying until it gets it. (max 30 seconds)
http://en.wikipedia.org/wiki/Error_Control_Coding
TeraCopy can skip files if you click the skip button. I don't know of anything automated that does it for you.
If you have an identically sized drive (or larger) there is the option of copying the whole drive's data over to another. That often works better than seeking to individual files - it can just start reading sequentially and keep going, until it gets it all.
The downside is it could take just as long (or longer), since it copies the entire drive surface - not just files. Also, no skip button. wink.gif
http://www.overclock.net/t/1267428/i-dropped-external-hdd-not-working-but-windows-detects-it/0_100#post_17435327
It sounds like you're doing the right thing - getting your data off as quickly as you can! That's about all that you can do...
Edit: Copying an entire 2TB HDD's contents from one drive to another could take half a day on a healthy drive if there's enough small files on it. You'll have to be patient with an underperforming drive.

Yeah, thanks for the info. It seems that I am going about it the right way. I noticed it was taking a while to copy a file a couple of days ago, so I opened up CrystalDiskInfo and saw that the drive had reallocated sectors. I got another 2TB HDD and installed that last night and have been trying to copy files since then. Should I stick with TeraCopy?

So even if the files take ages to copy, if TeraCopy is able to copy them, and the source and target CRC match, the file should be good right?

Quote:
Originally Posted by van13330gg View Post

I used Easeus recovery to back up my friend's broken hard drive before. It took a whole night to scan and back up but it works.

How big was your friends HDD? I'll look into that Easeus program.

Edit : Just checked their website. Did you use free version of data recovery?
Edited by Ice009 - 7/15/12 at 8:19pm
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post #6 of 17
7/15/12 at 8:19pm
Quote:
Originally Posted by van13330gg View Post

I used Easeus recovery to back up my friend's broken hard drive before. It took a whole night to scan and back up but it works.

That is what I use and have been amazed at the data it retrieves from what would normally be given up for lost.thumb.gif
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post #7 of 17
7/15/12 at 8:22pm
Her laptop's HDD was a 320GB one. She used roughly 100Gb though so not much were taken out. I don't know how long it takes to extract the files since I let it run overnight. About the program...not that I advocate it but there are ways to get it...just google.
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post #8 of 17
7/15/12 at 8:31pm
It was well worth the $100 I spent to purchase it. I bought it about a month ago and have saved the data from 7 customers hard drives so far, it has more than paid for itself already.
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post #9 of 17
7/15/12 at 8:36pm
Thread Starter 
Quote:
Originally Posted by Axis24 View Post

It was well worth the $100 I spent to purchase it. I bought it about a month ago and have saved the data from 7 customers hard drives so far, it has more than paid for itself already.

What version did you use? There seems to be a few on the site.
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post #10 of 17
7/15/12 at 8:39pm
I bought the Professional version so I can retrieve data from failed Raid configs.
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