Why my 2.5" Toshiba HDD is inaccessible ?

My 2.5" Toshiba HDD gave "Setup cannot access this disk" message during Windows XP setup, low level formatting programs and when using fdisk utility too. All of can see my disks informations ( like how many megabyte is my HDD, etc. )  but when i want formatting my disk they gave same error "setup cannot access this disk". Please for help for this situation. Thanks from now.
muratelmasAsked:
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CallandorCommented:
Is this an SATA disk?  If so, you need to press F6 during the initial install and provide a floppy with the SATA controller drivers.
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muratelmasAuthor Commented:
No it isn't a SATA disk. It's an IDE disk (2.5" Toshiba MK6021GAS)
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iedenCommented:
you may also want to check and see if the disk is locked...

To unlock the hard disk drive

unlock x:

The x represents the letter of the hard disk drive that you wish to unlock. For example, if you needed to unlock the C: drive, type c in the place of x.
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CallandorCommented:
This drive may have some strange partition information on it.  A tool like Active KillDisk can wipe it clean: http://www.killdisk.com/
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muratelmasAuthor Commented:
I can't boot from HDD so i can't lock or unlock my HDD
By the way it isn't locked i think
Because it isn't locked in my bios

You can see photos about this error:
http://arcla.somee.com/toshiba_hdd_error/100_0498.JPG (WINDOWS)
http://arcla.somee.com/toshiba_hdd_error/100_0500.JPG (BIOS)
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muratelmasAuthor Commented:
I've tried killdisk tool and after i couldn't it
It can see my HDD, but it gave me same error "setup cannot access this disk"
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iedenCommented:
You need to unlock the disk in DOS
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muratelmasAuthor Commented:
But how ? :(
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iedenCommented:
Boot to a DOS/Win9x floppy in the a: drive and as above:
To unlock the hard disk drive

A:\unlock C:
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muratelmasAuthor Commented:
boot from floppy with win98 disk
i wrote unlock c:
it did the command successfully
then i restart my computer
boot from win xp pro cd
then it gave me same error :
"SETUP CANNOT ACCESS THIS DISK"
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iedenCommented:
Do you know that the disk is good?
Can you run a DOD wipe on it using gdisk or some other utility?
If the HDD can successfully go through a disk wipe session, it should accept the OS.
If the HDD cannot be touched by another utility (such as GDISK or other disk utility) the drive may be bad.
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CallandorCommented:
If this is a laptop hard drive, check if the drive is inserted all the way and making good contact.
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TomTinsleyCommented:
I would look at SpinRite www.grc.com
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muratelmasAuthor Commented:
They did not work :(
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iedenCommented:
The hard drives are bad my friend. Start looking into warranty info for the drives.
I got 5 bad HDD's from a well known PC manufacturer in a row before getting one which would succesfully fdisk and format. Keep your chin up, you will eventually get a good drive.
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iedenCommented:
By the way, they were the same drive you are having issues with now. Maybe you got thte ones I sent back?
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Jeb911Commented:
BUY ANOTHER Drive....
I have 4 drives sitting here in front of my with the same issue....

-JEB
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