How to replace a hard drive...

john.moniz-rieW9WUcm8FFJ04o6PK0Fg at public.gmane.org john.moniz-rieW9WUcm8FFJ04o6PK0Fg at public.gmane.org
Thu May 5 22:06:01 UTC 2011




From: ori-RdxWQVHs3mjDN57Tih+YPw at public.gmane.org
Date: Thu, 5 May 2011 20:41:04 +0300
Subject: Re: [TLUG]: How to replace a hard drive...
To: tlug-lxSQFCZeNF4 at public.gmane.org



On Thu, May 5, 2011 at 7:45 PM, Lennart Sorensen <lsorense-1wCw9BSqJbviStVtt7rNQw at public.gmane.orgterloo.ca> wrote:


On Wed, May 04, 2011 at 06:25:05PM -0400, Peter King wrote:

> A little while ago I had a Western Digital Caviar Black drive that was throwing

> bad sector errors. On the view that storage is cheap and reliability is crucial,

> I replaced it with a fresh shiny new hard disk (a 1TB Seagate Barracuda), and one

> way or another managed to restore all the data that was on the damaged disk.

>

> This left me with the WD disk. So I tried reformatting it, which should lock out the

> bad sectors. That seems to work: once reformatted, it passes fsck with no problem,

> and it has fast access times.



fsck means nothing.  Use mkfs with badblock check.  Unless you low level

formatted it, nothing is done about bad sectors.  Of course modern drives

don't need that since they can automatically map bad sectors _on_write_

(not on read).  Writing to the whole disk should help the drive remap

all bad sectors.


Once the drive starts to develop bad sectors, the amount of bad sectors seem to grow experientially, this is at least my experience, so I would not count on such a drive.


-- Ori Idan
So what does experientially actually mean? It sounds like a nifty word actually looking for a meaning.

John.
 		 	   		  
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