Cyclic Redundancy

MarSR · October 15, 2015, 1:26am

“Cyclic Redundancy Check” on my 1T, 2nd internal drive, which is now an encased external drive. It is full of photos & videos.

It was working perfectly at first after I removed from the desktop & enclosed it… Very fast and no problems. Later on I did something stupid and believed I caused the problem myself… One file after the next began to have the CRC problem, until the entire drive was totally inaccessible.

I do have all the data backed up elsewhere, but would love to format & repair this drive and start using it again, but nothing I have tried will let me even format it. I’ve tried to scan it and format in disk management but it continually says it can not access the disk. I used a program I had for another external drive called “SeaTools” and did a long generic test. It showed “Bad LBA” many times, and “Not Repaired.” Then the test fails. Is there any hope for saving this drive? Some other program, maybe by HP, that will wipe the drive and make it usable again? (I’m using Win8 now.)

*This is the drive: It’s 3.5 yrs old: http://www.amazon.com/gp/product/B001BAWU5Q/ref=oh_details_o03_s00_i00?ie=UTF8&psc=1

John012 · October 15, 2015, 2:50am

Try using Data Lifeguard Diagnostics to write zeros to the drive.

How to low level format or write zeros (full erase) to a WD hard drive or Solid State drive

http://wdc.custhelp.com/app/answers/detail/a_id/1211

Zatick · October 15, 2015, 2:50am

CRC errors typically refer to data transmission errors, not actually read/write errors.

Try putting the drive back into the computer and see if you can read/write (not sure if that should even work after the CRC errors). But try formatting it and writing files etc.

Also post the smart report here, anything like seatools, hdtune, hddscan etc. will give you a readout of smart details.

Zatick · October 15, 2015, 2:50am

John012 wrote:

Try using Data Lifeguard Diagnostics to write zeros to the drive.

How to low level format or write zeros (full erase) to a WD hard drive or Solid State drive

http://wdc.custhelp.com/app/answers/detail/a_id/1211

John, that answer should probably be updated, because what it refer to as a low level format is not a low level format. A low level format is actually mapping the tracks to the disk, this is done by WD at the factory and can not even be done by the consumer on modern HDD’s (think anything from the last 25 years). It’s a common missnomer