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hydrogenhead
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Sata Hard Disk Power Issues

02/04/2011 11:52 AM

I have a large working sata hard disk which was taken out of a computer. The hard disk worked in the computer, but when I link 12v to the appropriate terminals it doesn't start up. Is there a way to fix this?
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Doorman
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#1

Re: Sata hard disk power issues.

02/04/2011 11:56 AM

Not certain, but this may have something to do with it.

If it was working, why did you remove it to test it?

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hydrogenhead
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#2
In reply to #1

Re: Sata hard disk power issues.

02/04/2011 12:02 PM

The hard disk worked, but the computer didn't (bios failure) The power supply that i am using gives the correct voltage and current.
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Lo_Volt
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#3

Re: Sata hard disk power issues.

02/04/2011 12:13 PM

You need a 5 volt supply as well as the 12 volts. With a SATA drive you may also need 3.3 volts.

In any case, just connecting the power may not make it do anything. Some devices need control signals to start up. I'm not in my workshop at the moment so I can't experiment, but I think that a hard disk will spin up if you simply apply all necessary voltages.
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mjb1962853
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#4

Re: Sata hard disk power issues.

02/04/2011 2:44 PM

I suggest you purchase a USB to HDD adapter and power supply kit. I got mine for <$10 and it works flawlessly to power and connect 2.5", 3.5", IDE, and SATA drives to my computer through a USB port. Since the kit includes a power brick with both the old IDE and the new SATA power connectors, the computer USB port does not have to provide any power. This kit will allow you to reliably test and use any compatible drives you have now or may acquire in the future.
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hydrogenhead
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#5
In reply to #4

Re: Sata hard disk power issues.

02/04/2011 4:19 PM

I suppose that's the best idea to avoid damage.
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Doorman
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#6
In reply to #5

Re: Sata hard disk power issues.

02/04/2011 4:28 PM

I sure think so; that is why I voted him a GA (a Good Answer, accessed by the Rate button on the bottom left hand corner of his comment).

This is the customary thing to do when someone offers up, well, a good answer.

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mjb1962853
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#7

Re: Sata hard disk power issues.

02/04/2011 5:02 PM

One exception for the kit pictured above:

The power brick is not needed for small 2.5" IDE laptop drives. The computer USB port is expected to supply the single +5V (500mA) needed for this one case.

Good Luck!

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