Scratching sounds coming from hard disk.

For the past few weeks there has been a scracthing sound which is generally getting worse that sounds like its coming from the hard disk. It is under warranty in south east asia but I am currently studying in the UK and its not possible to take it back to south east asia to get it repaired.
However I've only had the laptop for about 5 months and it is essential that it gets repaired as soon as possible since it is so new. Would it be possible to get it fixed in the UK since the laptop has been well looked after and I am sure it is a failure of the component.
Thanks for your help.
Nat

natashasulin wrote:
Would it be possible to get it fixed in the UK since the laptop has been well looked after and I am sure it is a failure of the component.
Thanks for your help.
Nat
This is the US web site.

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Noise from hard disk when stressed

Hi all,
I experienced a scratching noise coming from the hard disk (?) when the computer is stressed (e.g. iWeb, Photoshop, etc.).
I checked the CPU usage and the fan rpm but the noise continues even though the fan is swirling very low and the CPU is at its minimum value so I think it is a hard disk related issue.
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Hi all,
I experienced a scratching noise coming from the hard disk (?) when the computer is stressed (e.g. iWeb, Photoshop, etc.).
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I bought a new mackbook pro in this Jan. Recently, I hear some not continuously noise from hard disk, especially when i open a file in hard disk or verify the hard disk. Is something wrong with my hard disk?
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This hard disk clicking is a know problem for many laptops. If you search it on Google, you will find a lot of discussions about it in the Unbuntu Linux forums. In most cases, it is due to the Advanced Power Management (APM) feature of notebook hard drives. The default APM settings of these drives are aggressive so as to extend notebook battery life. As a consequence, the HD tries to park its actuator head to the ramp whenever it judges the system as idle. However, OS X or some third-party applications may access the hard disk quite often, resulting in a park/unpark cycle every few seconds.
Every of these cycles is counted as one load/unload cycle. Most notebook drives support up to 600,000 load/unload cycles. If a hard drive parks its head every few seconds, it may shorten its life by "using up" the cycles more quickly.
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Basically, Travelstar 5K160 drives have three idle modes, from which a user can set one as the deepest idle state:
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2) Low Power Idle: this is usually the factory default idle mode. The head is UNLOADED to the ramp and the power consumption is 60-65% less than the performance level. Recovery time is about 300ms.
3) Low RPM idle: in this idle mode, the hard disk will spin down to a lower RPM speed. More power is saved but recovery time is much longer. (I can hear the disk spin down and spin up again a few times per minute. There is also a lag in system reaction time.)
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If your hard drive is a Hitachi Travelstar 5K160, you can find the 5K160 specifications version 1.1 from Hitachi web site. On page 69 of the document, it explains the APM idle modes. On page 145 about the register values of the APM modes.
To set Active Idle as the deepest idle mode may adversely affect battery life. (I haven't yet tested it myself) However, there seem not to be a big difference than the Low Power Idle, according to the datasheet of 5K160. For this model, power consumption of Active Idle is 0.8W, while that of Low Power Idle is 0.6W, on average.
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Scratching sounds coming from hard disk.

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