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manasan3010
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Re: Symbol of three stacked disks to left of power button on front of CPU

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Why is there a light to indicate harddisk activity?

Is it so important?

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WAWood
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@manasan3010

The hard disk activity light (or LED in newer PCs) is a carry-over from the "old days" when PCs, and drives, were a lot slower.

When folks then would launch a program, or would Browse to a website, the hard drive was involved. In the first case, it would be reading from the drive; in the second, writing to it.

Since nothing much would be seen on the desktop during this activity, vendors decided to provide this activity "indicator" on the PC -- to assure folks that their PC was still functioning.

These actually used to be on the FRONT of laptops -- so they were clearly visible.  But over time, they have been moved to the side, and even to the back.

So, as to whether or not it's "important" -- that's only if you want to see when your drive is busy.  When it is idle, the light is not blinking.

***If my post helped, click the thumbs-up symbol to say thanks***

***Please mark Accept As Solution if my post solved your problem***

I am a volunteer and I do not work for, nor represent, HP

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Raj1788
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@manasan3010

Thank you for joining HP Forums.

It's a pleasure assisting you in finding answers to your technical queries.

 

The light indicates the if the hard drive is functioning, yes it is important.

 

Keep me posted, how it goes!

If the information I've provided was helpful, give us some reinforcement by clicking the Accepted Solution and Kudos buttons, that'll help us and others see that we've got the answers!

Have a great day!

Cheers:)

Raj1788
I am an HP Employee 

WAWood
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@manasan3010

The hard disk activity light (or LED in newer PCs) is a carry-over from the "old days" when PCs, and drives, were a lot slower.

When folks then would launch a program, or would Browse to a website, the hard drive was involved. In the first case, it would be reading from the drive; in the second, writing to it.

Since nothing much would be seen on the desktop during this activity, vendors decided to provide this activity "indicator" on the PC -- to assure folks that their PC was still functioning.

These actually used to be on the FRONT of laptops -- so they were clearly visible.  But over time, they have been moved to the side, and even to the back.

So, as to whether or not it's "important" -- that's only if you want to see when your drive is busy.  When it is idle, the light is not blinking.

***If my post helped, click the thumbs-up symbol to say thanks***

***Please mark Accept As Solution if my post solved your problem***

I am a volunteer and I do not work for, nor represent, HP

View solution in original post

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