Dual boot win 7 and ubuntu pc hdd has i/o bad block errors but scans reveal no problems

Hello techs,
I have a pc that Dual boots win 7 and ubuntu.  When in ubuntu, the os crashes and gives some error about hdd has i/o bad block errors but scans reveal no problems.  I have used the WD scan tool several times and it always says the hdd is fine.  The win 7 os has issues, too it seems.  There are i/o errors in Event Viewer.  Is this hdd crashing, or is there some other issue since the WD tools don't find anything.
Any help is appreciated.
Thank you,
Mark88
Mark O'BrienDispatch Software Support and Server AdministrationAsked:
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NetRolller3DConnect With a Mentor Commented:
Try replacing the cable connecting the hard drive to your motherboard.
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rindiConnect With a Mentor Commented:
Is it a WD disk or from another manufacturer? When scanning, always make sure you use the manufacturer's diagnostic utility and not one of a 3rd party.

Also run the full (long) tests, as most of those tools have short and long tests. Then also check the SMART status of the disk (usually those diags also have a SMART test).

Apart from that, when you run those tests, and it is a Windows version of the diagnostic, make sure you have connected the disk to another PC running Windows, and you haven't started from the OS on the disk, otherwise the diags would not be reliable. I usually run the tests from the UBCD, which includes those tools:

http://ultimatebootcd.com

There is a further very good utility you can use that is able to regenerate a bad disk (sometimes). With the trial version you can scan the disk, but it can only revive 1 bad sector at a time. So if it shows any problems with your disk you should buy it:

http://dposoft.net
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Mark O'BrienDispatch Software Support and Server AdministrationAuthor Commented:
Yes it is a WD disk and I used the WD utility.
Can you list the steps to do, "make sure you have connected the disk to another PC running Windows, and you haven't started from the OS on the disk" please?  Thank you!
Mark88
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ThomasMcA2Commented:
He meant this:

Use the UBCD tool to create a bootable CD. Boot from that CD, then run the disk scan tools.
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rindiCommented:
Almost. There are 2 versions of the WD diagnostic tool. The one that runs from the UBCD runs in it's own environment which is similar to DOS. You wouldn't have any issues running that diagnostic, as your HD wouldn't be used for anything else.

The other version is a windows utility you can start from within windows. But you can't use it to diagnose the same disk you are running it from. So if you are using this tool you must start it from a PC running windows from another PC, then use it to scan your failing disk which is also connected to that other PC.
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ThomasMcA2Commented:
What user that's not already an expert would have the knowledge or hardware to do that?

Please stop suggesting such a "solution" - there are several disk diagnostics that can run from a bootable CD, DVD or USB stick. Just a few examples are UBCD, Bart, Riplinux, and System Rescue CD.
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Mark O'BrienDispatch Software Support and Server AdministrationAuthor Commented:
Ok.  What if I run the hdd scan but still nothing is found?
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rindiCommented:
Run the other tool I mentioned, HDDREG. Or clone the disk to another one and if you don't have any issues with the new disk, you'll see there's a problem with the original. I have seen some situations where the disk had a problem and yet it's diagnostic utility didn't show any problems. So the diags aren't a "catch all" tool.
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Mark O'BrienDispatch Software Support and Server AdministrationAuthor Commented:
I tried to download ubcd and all I got was spyware
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rindiCommented:
When you click on the download link of the UBCD site, scroll down to "Download Mirrors". In that section click on one of the icons that looks like a hard-disk. That should download the iso file of the UBCD and nothing else. If one of the mirrors doesn't do that, select the icon I mentioned from another mirror.
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nobusCommented:
here a direct link :  http://ubcd.mirror.fusa.be/ubcd511.iso
you can also reseat all connectors, or hook the drive to another sata port
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Mark O'BrienDispatch Software Support and Server AdministrationAuthor Commented:
You know Netrolller3d, I wonder if that's the issue.  I have been unable to find GOOD quality sata cables around.  They never fit tight on the board or the hdd.  

Do you know where to get good ones?  Ive tried many and they just dont make it.

Mark88
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nobusCommented:
i have (not yet) had any problems with them
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Mark O'BrienDispatch Software Support and Server AdministrationAuthor Commented:
I think this is the link: http://ubcd.sourceforge.net/download.html
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nobusCommented:
Mark, i already posted the real direct link to UBCD download
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Mark O'BrienDispatch Software Support and Server AdministrationAuthor Commented:
Thank you, Nobus. Im at work and I tried that link and it's blocked ---Web Category Blocked
This Web site is in a category that represents a potential information security risk to the Corporation and has been blocked by Corporate Information Security.Blocked URL: http://ubcd.mirror.fusa.be/ubcd511.iso.

But the other one http://ubcd.sourceforge.net/download.html I am actually able to browse to here at work.

Not sure what that's all about.
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nobusCommented:
>>  Information Security.Blocked   <<  they block anything they deem possibly harmful
in this case, there's no reason
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Mark O'BrienDispatch Software Support and Server AdministrationAuthor Commented:
Netrolller3d, I went to microcenter and paid the $5 for a new sata cable.  The issue seems to be fixed, but I have to watch the performance awhile.
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nobusCommented:
you can lower your internet explorer security settings, if you wan to access it without that popup
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Mark O'BrienDispatch Software Support and Server AdministrationAuthor Commented:
Still have not seen the i/o errors.  It appears the issue was the hdd cable.  But Im afraid to close the question yet.  What do you guys think?  Has it been long enough yet?  Mark88
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nobusCommented:
if younpost an update every 3-4 days you can keep it open longer
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Mark O'BrienDispatch Software Support and Server AdministrationAuthor Commented:
ok
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nobusCommented:
lets hope it's ok, and was a bad contact - could be a plug not fully inserted
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Mark O'BrienDispatch Software Support and Server AdministrationAuthor Commented:
Exactly.  Well I guess I'll close this for now.
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Mark O'BrienDispatch Software Support and Server AdministrationAuthor Commented:
Thank you.  I do see one system hdd event viewer error for an hdd controller since I replaced the sata cable whenever I did that.  Not bad compared to a whole bunch.  Thank you techs for thehelp.<br />Mark88
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