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C5 error/warning with 2TB Green drive

post #1 of 16
Thread Starter 
Upon reading the news thread about WD's "problems" with their Green drives that allegedly shorten their lifespan I decided to check mine. I've got two 1.5TB and two 2TB drives, and the first of the 2TB, when just browsing the "Health" tab in HD Tune Pro, shows me this:

(C5) Current Pending Sector is yellow with a "warning" and a 35 value under the data column

When I click on it, it says this: The drive has unstable sectors; 35 unstable sectors

What's going on here? I've had this drive for a couple months, no more. I did a quick test with WD's Data Lifeguard Diagnostics that passed. Haven't run the extended test because it takes hours.

Any ideas?
post #2 of 16
That means the drive is indeed beginning to develop bad sectors. Many drives do, they just hide it well. Often you can restore the media to health and extend its life using SpinRite, especially if you catch the problem early (as you have).

In the meantime, by all means run the extended self-test; you can use your computer while it's in progress and come back to look at the results later.
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post #3 of 16
Thread Starter 
Thanks for the reply.

The only thing on the drive were movies, and I'm copying them over to another drive now (lucky me I hadn't filled these drives up yet).

Are things only going downhill from here? I'd rather just RMA it now to avoid scournging up 2TB of space in a few months when it does crap out.

I'll run the extended test tonight and let it go overnight. I started it up, but it said it'd take 5 hours so I'll just leave it for later.
post #4 of 16
Quote:
Originally Posted by CasanovaFly;13234435 
Thanks for the reply.

The only thing on the drive were movies, and I'm copying them over to another drive now (lucky me I hadn't filled these drives up yet).

Are things only going downhill from here? I'd rather just RMA it now to avoid scournging up 2TB of space in a few months when it does crap out.

I'll run the extended test tonight and let it go overnight. I started it up, but it said it'd take 5 hours so I'll just leave it for later.

The self-test is designed to run while you're using your computer, so feel free to do it immediately.

Yes, after you get your first bad sector, it's all downhill from there.

The self-test will hopefully find any more bad sectors which may be hiding on the disk and make it even more of an RMA candidate.
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post #5 of 16
Thread Starter 
Will begin running now.

EDIT: After the files finishing copying. Don't wanna take any chances.

Thanks.
post #6 of 16
Thread Starter 
Ran extended test, passed.

Where do I go from here?
post #7 of 16
You could zero fill the hdd.
After reading your thread I checked my own WD 2TB and I had a value of 3 on C5.
I zero filled the rest of the drive and the value went down to 1.
I don't think C5 is an absolute indication of imminent HDD failure.
I have a WD 1.5TB that when connected to a quick dock through my JMicron eSATA port it would generate C5 errors. When I zero filled the drive, C5 went to zero and it didn't produce any more errors after I moved it to Intel SATA port.

From Wikipedia
Quote:
Current Pending Sector Count: Count of "unstable" sectors (waiting to be remapped, because of read errors). If an unstable sector is subsequently written or read successfully, this value is decreased and the sector is not remapped. Read errors on a sector will not remap the sector (since it might be readable later); instead, the drive firmware remembers that the sector needs to be remapped, and remaps it the next time it's written.
post #8 of 16
Thread Starter 
I'll give it a shot while I got the space, thanks.
post #9 of 16
Quote:
Originally Posted by CasanovaFly;13241293 
Ran extended test, passed.

Where do I go from here?

Run SpinRite, if you have a copy or can obtain one.
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post #10 of 16
Thread Starter 
Just finished writing zeroes to the drive at the behest of TonyGrunt.

Checked with HDTune... no more warnings, no unstable sectors.

Problem solved? Or should I still be wary? What say you, error10?
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