how to correct CHS table on Hdd. factory set?

February 14, 2011 at 15:54:06
Specs: FAT
TESTDISK 6.6 DATA RECOVERY UTILTY HAS FAILED ME .how do you get the orginal WD 80gig SETTING? CHS

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#1
February 14, 2011 at 17:31:44
The WD web site ought to have it if not printed on the drive.

Almost any drive made in the last 20 years has a chip in it that has the info. Usually plug it in and let bios find it.

"The era of big government is over," said Clinton 1996


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#2
February 14, 2011 at 17:40:05
Being an 80Gb drive it will be using LBA. With LBA the CHS setting will be set during the low level format that is done in the factory. The firmware then does the interpretation between LBA and CHS.

If you really have damaged the CHS setting, which I doubt, then the drive is toast.

What errors are you getting?

Stuart


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#3
February 14, 2011 at 18:40:39
Yeah, the bios should auto detect it and you shouldn't have to worry about C/H/S.

The maximum C/H/S is 16383/16/63 or about 8.4 gig. Above that you use LBA. But a lot of older drives that exceeded that capacity had that figure written to their firmware so if you did ID an 80 gig drive by C/H/S you'd still use 16383/16/63. You'd still have access to all 80 gig. I guess when a drive was ID'd that way the firmware would translate it to the actual drive capacity.

There was a WD page that showed the C/H/S for their drives and those larger than 8.4 gig all had that figure. I just checked and it's no longer there so either they moved or removed it.

(Edit) This is part of the text of that page:

http://www.reocities.com/smithmonte...

Go down to 'Parameters of 8.4 GB Drives and Larger'

This space for rent


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