Re: 61GB in bad sectors (ref: 200GB drive reads as 128)
From: Ron Martell (ron.martell_at_gmail.com)
Date: 09/15/04
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Date: Wed, 15 Sep 2004 04:08:09 GMT
"S" <sa###@msn.com> wrote:
>Sorry for the long post.
>
>My problem is that I have corrupted data (61132684 KB in bad sectors) on my
>200GB WD hard drive. That's right - 61GB!
>Not too happy with that because I had a difficult time partitioning and
>installing xp on the drive and had to settle for a single partition. Each
>effort to make multiple partitions resulted in less than 186GB of total
>avail. space.
>So, I installed with a Windows XP Pro with SP1a CD on the single partition
>(186GB).
>My Intel 845 motherboard already had the latest BIOS (48-bit LBA support
>confirmed).
>Things went fine as far as I could tell.
>I've had no problems with the correct space being reported or bad sectors
>for the last month or so. I just happend to take a look at available space
>last night and was shocked to see only 85.4GB left! Well, I only have
>40.8GB (44,387 Files, 2,234 Folders) of data on my C:\ so obviously
>something is wrong somewhere.
>186-40.8 != 85.4
>
>Running chkdsk found this:
>
>"C:\Documents and Settings\Scott>chkdsk
>The type of the file system is NTFS.
>Volume label is XP Professional.
>
>WARNING! F parameter not specified.
>Running CHKDSK in read-only mode.
>
>CHKDSK is verifying files (stage 1 of 3)...
>File verification completed.
>CHKDSK is verifying indexes (stage 2 of 3)...
>Index verification completed.
>CHKDSK is verifying security descriptors (stage 3 of 3)...
>Security descriptor verification completed.
>Correcting errors in the Volume Bitmap.
>Windows found problems with the file system.
>Run CHKDSK with the /F (fix) option to correct these.
>
> 195350368 KB total disk space.
> 44652732 KB in 43976 files.
> 16268 KB in 2255 indexes.
> 61,132,684 KB in bad sectors.
> 140072 KB in use by the system.
> 65536 KB occupied by the log file.
> 89408612 KB available on disk.
>
> 4096 bytes in each allocation unit.
> 48837592 total allocation units on disk.
> 22352153 allocation units available on disk."
>
>I ran "chkdsk /f" (required a reboot) but the bad sectors have stayed.
>Nothing has changed with "chkdsk /r" either.
>
>WD's Data Lifeguard Quick Test results:
> Test Option: QUICK TEST
> Model Number: WDC WD2000BB-00DAA3
> Serial Number: WD-WMACK1926431
> Firmware Number: 571.B357
> Drive Type: IDE
> Port Number: 0, Primary/Master
> Capacity: 134.22 GB
> SMART Status: PASS
> Test Result: PASS
> Test Time: 18:31:51, September 14, 2004
>
>After lots of googlin' I finally found MKBA-303013.
>
>I checked my registry and
>"HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Atapi\Parameters\" did
>NOT have the "EnableBigLba" key AT ALL!
>
>That was one thing I didn't do and I don't know how if this is responsible
>for the problem.
>
>I also don't know if adding this key will solve the problem (I am backing up
>all my data now so I will give it a shot).
>
>The reason I'm bugging you is I want to know if I can EVER get XP to
>recognize the whole 200GB drive and (if it comes down to another fresh
>install)
>HOW DO I INSTALL XP PROPERLY to do that.
>There's no time PRE-installation to edit the registry. SP1, I would think,
>should have set this key but it didn't.
>
> Is there something I'm missing or am I hosed?
>Is the Data Lifeguard Quick Test telling me anything (except the incorrect
>capacity) ?
>
>
>Thanks in advance!
>
A drive with 30% of its capacity in bad sectors is almost certainly
doomed and could fail completely at any moment. I am surprised that
it passes even the WD Data Lifeguard Quick Test. What does the
complete test tell you?
I would be checking with WD regarding possible warranty status for
this drive and getting a replacement a.s.a.p.
As for the capacity question, this is the old confusion between binary
and decimal measures for computer data.
Computers have always used binary measures for capacity.
Kilobyte = 1,024 bytes (2^10)
Megabyte = 1,048,576 bytes (2^20)
Gigabtye = 1,073,741,824 bytes (2^30)
However the hard drive manufacturers have decided to use decimal
values for reportion the capacity of their drives and so to them a
gigabyte = 1,000,000,000 bytes
Windows reports the drive capacity in binary gigabytes.
186 binary gigabytes x 1,073,741,824 = 199,715,979,264 bytes which
Western Digital would round up to 200 billion and call the drive a 200
gigabyte model.
Similarly with your chkdsk report:
195350368 KB x 1024 = 200,038,776,832 bytes, bang on with the 200 gb
value by Western Digital.
But with 61 gb of bad sectors (unless you got the drive for free) I
would be looking to replace it as soon as possible.
Good luck
Ron Martell Duncan B.C. Canada
-- Microsoft MVP On-Line Help Computer Service http://onlinehelp.bc.ca "The reason computer chips are so small is computers don't eat much."
- Next message: Ant: "Re: Boot Windows XP from external USB drive"
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