How do I isolate bad sectors on a Hard Drive?

July 23, 2011 at 02:41:12
Specs: Windows 7

I have a Maxtor 160 GB HDD and i did a short and a long test with Seatools for Dos v1.1 and it failed.
Next thing that i did is Zero Fill ALL, after that i run the short test and it Failed at 73% and a long test and it Failed at 5% with 100 errors found.

My question is: Is there a way to reduce the capacity of HDD to escape the BAD SECTORS?

Example: All the bad sectors are 40 GB, and after a procedure to "delete" the bad sectors my HDD will be 120 GB


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July 23, 2011 at 02:53:21
A few bad sectors on a hdd is not a problem. I would consider 100 to be excessive.

When they begin to breed this is a sign it is wearing out and should be binned soonest.

Consider if it failed suddenly such that it could no longer be accessed - this would be a nightmare.

One can re-format using an option to retest (rather than flag and bypass) failed sectors and reset as such if usable. However this is unwise, because they failed originally for a reason.

Replace *NOW*! After all, hdd's are not that expensive.

Good Luck - Keep us posted.

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July 23, 2011 at 03:15:56
I now that the best thing is to get a NEW HDD :D

I had thought when i "lock down" (flag and bypass) the bad sector , maybe the hdd will not try to write on them and they wont spread so fast :D

What is the best method to mark the bad sectors?

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July 23, 2011 at 04:20:45
Hard disks are cheap. How much is your data worth to you?

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Related Solutions

July 23, 2011 at 04:40:14
Full format or use CHKDSK. I also agree with above posters about replacing the hard drive.

We can not fight new wars with old weapons, let he who desires peace prepare for war - PROPHET.

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July 23, 2011 at 06:31:23
It is not only locking out the bad sectors but keeping the heads from going over the bad areas. You will need to note the bad track and head for the bad spots. You need to try to partition to avoid the bad areas.
Probably you will get at best 50% usable. It is cheaper and more time effective to buy a new drive, since you don't know when new bad sectors will appear.

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July 23, 2011 at 11:22:20
The SeaTools long test quits when more than 99 LBA errors are found, probably because the Seagate people know that if it has that many bad sectors, it's not worth fiddling with it - it will just get worse.

The fact that it did that again after you zero filled the drive confirms that.

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July 23, 2011 at 13:43:24
I guess you could try a low level format then try again. A low level almost never hits the same areas.

1/3 of highway deaths are caused by drunks. The rest are by people who can't drive any better than a drunk.

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