Data Error Redundancy Check

So I get the following message, when i try to access my 3TB Seagate backup plus external HD:data error cyclic redundancy check. How do i solve this and be able access my hard drive?

 

Firstly it's always best to provide this information requested at top of forum:
When asking for support please tell us about your computer!
But in the meantime look at this:
https://support.microsoft.com/en-gb/kb/319128
Even though it refers to 'outlook' the same applies generally.
And here:
http://www.wikihow.com/Fix-a-Cyclic-Redundancy-Check-Error

 

oh my Pc is a Hp pavilion and i use windows 8.1. I dont think the disk check in the microsoft article can do a external drive. i typed it exactly like it said but think was for primary drive. how would i get it too check my external drive. I was told i may need to get new USB cables. I also heard you can open the casing too see if the needle is stuck on the drive plate

 

To check your drive for errors.

Here is how you can initialize the command window with the elevated privileges, and can run the CHKDSK command with appropriate switches:

1. Log on to the Windows 8/Windows 8.1 computer with the administrator account.
   
2. From the Start screen, click the Desktop tile.
   
3. Once on the desktop screen, hover mouse to the bottom right corner of the window.
   
4. From the displayed Charms bar, click Search.
   http://i.imgur.com/rBMDhBA.jpg
   
5. From the Search pane that is displayed in the right, in the available field, type CMD.
   
6. From the displayed suggested applications list, right-click Command Prompt.
   
7. From the context menu that appears, click Run as administrator.
   http://i.imgur.com/DCuOueF.jpg
   
8. On the User Account Control confirmation box, click Yes to provide your consent to continue.
   
9. Once on the Administrator: Command Prompt window, type the CHKDSK /F C: command to check the C: drive for errors, and fix them if detected. Alternatively you can also type CHKDSK /R C: command to check the C: drive for errors, and automatically recover the readable data from the bad sectors that the drive may contain.

• 
  http://i.imgur.com/q5IiXPc.jpg
  http://i.imgur.com/JDMZXdp.jpg
  10. Wait till the command is executed successfully, and once the process is done, restart the computer and start using Windows 8/Windows 8.1 normally.

 

There were two links.
If you go back and read the WikiHow link again, it explains how you choose a particular drive to run chkdsk on. It says very plainly what letter to replace with the external drive letter.

 

A CRC error occurs when the checksum for that sector mismatches the data contents. Each time you write a sector, the controller (which has been on the drive for 25+ years, now) adds up all of the ones and zeros to create a checksum which is then written after the end of the data area for each sector. Each time you read a sector, the controller adds up the numbers again and compares it to that checksum. Your error means they don't match.
And, there are two ways it can happen. Either the power went away rudely while the drive was in a mid-sector write operation or the drive is failing. Of the two, the first is rare as h*ll, so....
Get the trial version of http://www.hdtune.com 's pro utility and run it. Change the drive selection to the Seagate external. Click on the Health tab. If the data column for (05) Reallocated sectors or (C5) Pending is not zero, the drive is failing. DO NOT RUN CHKDSK if this is true; it will only get worse as a result.
If the contents of that drive are critical, you need another 3TB drive so you can sector-by-sector clone the failing one to one which is not failing. Unless the original drive is in bad shape, the odds are 90%+ that will fix things.

 

HD Tune Pro: Seagate Backup+ Desk Health

ID Current Worst ThresholdData Status
(01) Raw Read Error Rate 72 72 6 908177 ok
(03) Spin Up Time 93 92 0 0 ok
(04) Start/Stop Count 97 97 20 3199 ok
(05) Reallocated Sector Count 69 58 36 40760 warning
(07) Seek Error Rate 52 47 30 695812027657 ok
(09) Power On Hours Count 80 80 0 17889 ok
(0A) Spin Retry Count 100 100 97 0 ok
(0C) Power Cycle Count 100 100 20 810 ok
(B7) SATA Downshift Count 100 100 0 0 ok
(B8) End To End Error Detection 1 1 99 121 failed
(BB) Uncorrectable Error Count 1 1 0 65535 ok
(BC) Command Timeout 100 70 0 489633808523 ok
(BD) Unknown Attribute 1 1 0 154 ok
(BE) Airflow Temperature 42 37 45 56574286037050 failed
(BF) G-sense Error Rate 100 100 0 0 ok
(C0) Unsafe Shutdown Count 100 100 0 188 ok
(C1) Load Cycle Count 81 81 0 39452 ok
(C2) Temperature 58 63 0 81604378682 ok
(C5) Current Pending Sector 1 1 0 23984 warning
(C6) Offline Uncorrectable 1 1 0 23984 ok
(C7) Interface CRC Error Count 200 200 0 0 ok
(F0) Head Flying Hours 100 253 0 150753352095336 ok
(F1) Unknown Attribute 100 253 0 12278602484788 ok
(F2) Unknown Attribute 100 253 0 55300124341410 ok

Health Status : warning


Thats the read out i got for external drive

HD Tune Pro: WDC WD6400AACS-00G8B1 Health

ID Current Worst ThresholdData Status
(01) Raw Read Error Rate 200 200 51 571 ok
(03) Spin Up Time 140 137 21 5991 ok
(04) Start/Stop Count 99 99 0 1456 ok
(05) Reallocated Sector Count 190 190 140 76 warning
(07) Seek Error Rate 100 253 0 0 ok
(09) Power On Hours Count 59 59 0 30329 ok
(0A) Spin Retry Count 100 100 0 0 ok
(0B) Calibration Retry Count 100 100 0 0 ok
(0C) Power Cycle Count 99 99 0 1431 ok
(C0) Unsafe Shutdown Count 200 200 0 88 ok
(C1) Load Cycle Count 200 200 0 1456 ok
(C2) Temperature 113 105 0 34 ok
(C4) Reallocated Event Count 183 183 0 17 warning
(C5) Current Pending Sector 200 200 0 1 warning
(C6) Offline Uncorrectable 200 200 0 1 ok
(C7) Interface CRC Error Count 200 200 0 0 ok
(C8) Write Error Rate 200 200 0 0 ok

Health Status : warning

thats the readout i got for the internal drive

question is if both drives are failing how would i get the data off the external one if i cant get into it. and since i cant get into external one i have nowhere to save the data from the internal drive. Could some kind of service get the files and info off a failed drive?

 

First, disconnect the external drive and run HDTune on your internal one (WD6400yada). This time, go to the Error Scan tab and click the Start button. It will take a while; but, if you get even one red box, your internal drive is failing, too and we need to address that before tackling the external.