A Simple, Free Hard Disk LED Simulator

Sometimes it's useful to know whether the hard disk LED indicator on your computer is flashing.  Because if it is, that will explain why the computer might be running slowly, or why it might be an idea not to restart the machine right now.

Trouble is, not all computers are fitted with a hard disk activity LED any more.  And even if yours has one, maybe the system unit is under your desk and thus the indicator isn't easy to see.

A simple solution is to use a software-based hard disk activity indicator, and DiskLED is a good one.  It runs under Windows XP and above, needs no installation, and the download is less than 1 MB.  I've checked the application with VirusTotal and it seems totally free of malware and viruses.

You can download DiskLED from http://www.sepago.de/e/research-development/downloads/diskled.  The download link is at the top of the right-hand column.  Once you run the program you'll see (if you look carefully) a small black rectangle in your system tray.  This is your on-screen disk LED, which will flash green when the hard disk is being accessed.

You can also use DiskLED to monitor other performance indicators on your computer.  Read the documentation on the web site for more information, or right-click the system tray icon and choose Configure to see what's available.





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by pitchu.rpm on 5. April 2013 - 10:13  (106834)

This one looks interesting

by bharat patil on 7. March 2013 - 7:43  (106011)


by MilesAhead on 29. October 2011 - 0:05  (82339)

You can find several additional HD monitor utilities on this thread:


The AHK source is included. I like the one that flickers the Scroll Lock LED. Kind of a novelty but I use a lot of Tray Hotkey utilities. The system tray is already crowded without multiple indicators.

by MidnightCowboy on 28. October 2011 - 11:53  (82300)

This is quite neat for what it does and almost identical in resource use on my W7 system to DiskMon. DriveGLEAM on the other hand uses 25% less memory with indicators active for both my drives, my dual core CPU, RAM and V-RAM. If, like me, others users of DriveGLEAM are not too keen on the default purple icon background, you can change this by editing the programs .ini file once it has been created. Simply open the file, scroll down to the background settings, change the values thus and save.



This suits my tray theme but you can always experiment with other values until you achieve the look you want.

If you don't like the order multiple icons appear in, you can use this to change them around.


Works for me on W7 x 32 although it's not listed as being supported.

by MerleOne (not verified) on 28. October 2011 - 10:01  (82294)

There is also FloatLed (http://www.stone-oakvalley-studios.com/floatled_index.php), excellent and light (no pun).
Cheers !

by DesElms on 27. October 2011 - 2:19  (82203)

This one looks interesting because it's so configurable. One of my frustrations with tools like this is that they aren't sufficiently responsive, and so the hard drive's real, physical light might flicker three times, and the little hard drive light utility in the system tray might not flicker at all, or might flicker only once. The fine-grained configuration features of this one might make this one more responsive.... I'd have to check it out to see.

The only reason I ever used a tool like this was when my notebook was in the docking station, which docking station has a curved piece on the front which holds the notebook in the station even when the flat docking station surface on which the notebook sits is elevated at an angle. But then I got a cooling pad to put beneath the notebook, on the docking station's flat surface, on tall rubber feet to improve airflow, and all of a sudden the notebook was up high enough that I could see the hard drive physical lights again.

However, the new DELL I'm contemplating has its physical hard drive light curiously on the underside of the front lip of the notebook, and so it can't easily be seen, almost no matter where/how it's sitting; and I've noticed several new HP notebooks out there have the hard drive light on the side of the notebook, next to the CD/DVD drive... so it can't be seen at all during normal use. A product like this has huge utility in cases like that; or if one likes to keep the main part of one's desktop computer on the floor so that it's not easy to see the hard drive's physical light.

I've searched fairly long and hard over the years for a good freeware utility of this sort, and there are, it turns out, only about five of them out there, two of which are kinda' bad, and one of which hasn't been updated in years and is now hard to find. That leaves only two other freeware ones of which I'm aware...

...a slick and fully-featured little utility called "Drive Gleam"...

...and another much simpler, but quite able one by SysInternals called "DiskMon".

From reading Richard's article, here; and from looking at the Sepago web site, this one is likely worthy of being the only other freeware one out there that's actually worth seriously considering. It might even be the best of the three, from what I can tell.

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