OTish:HD LED always blinking at 1 second intervals

Discussion in 'DIY Computers' started by Scotoma, Aug 8, 2004.

  1. Scotoma

    Scotoma Guest

    Hi all
    I've seen this problem in the past, had it myself and now I've discovered
    someone else with it?

    What causes the HD LED to flash at one second intervals as if the drive was
    being accessed. This has happened with different makes of HD. This persists
    even after a clean install with no programs installed? Indexing service on
    all drives is off, a custom static page file has been set, autoplay is off
    and there is only the HD on the primary channel.

    Any ideas?

    Scotoma, Aug 8, 2004
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  2. This is normal behaviour with WinXP. Windows Explorer looks around every
    second or two to see if any CD/DVD drives have acquired (or lost) disks
    ... apparently the 'disk has been changed' doesn't actively interrupt the
    OS. Why polling the EIDE controller causes the LED to flash I am not
    sure, but it always seems to.
    GSV Three Minds in a Can, Aug 8, 2004
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  3. Scotoma

    Scotoma Guest

    Hi GSV Three Minds in a Can

    Thanks for your reply. :) My HD LED doesn't blink at 1 second or so
    intervals though. Not even faintly. It does blink as normal when the HD's
    are being accessed. I'm using XP Home. It used to blink faintly every second
    or two until I changed my mobo and HD.
    I first noticed this HD LED behaviour after setting up a freinds machine who
    had their case at eye level. My case is on the floor so I hadn't noticed the
    faint regular blinking before. I came to the conclusion that it had always
    done it. Now someone else has brought it to my attention again, I see that
    my HD LED does not faintly blink at regular intervals. lol. Personaly I
    don't really care. I was just looking for an answere and to pass on the info
    to someone.

    Thanks again :)

    Scotoma, Aug 8, 2004
  4. Interesting, since all my WinXP systems do it .. do you actually have an
    EIDE connected CD/DVD drive on this machine which doesn't blink??
    GSV Three Minds in a Can, Aug 8, 2004
  5. Scotoma

    Paul Hopwood Guest

    I'm using Windows XP Professional and my HD LED rarely blinks when the
    drives aren't actually in use. When the machine is idle there tends
    to couple of short bursts (presumably just polling) followed by no
    activity for around 30 seconds. I'm certainly not seeing it flash
    every second.

    Paul Hopwood, Aug 8, 2004
  6. Scotoma

    Scotoma Guest

    Yes. A Pioneer107 set as master and a Plexwriter CDRW set as slave on the
    primary channel.
    Scotoma, Aug 9, 2004
  7. Scotoma

    Scotoma Guest

    Sorry Guys.
    My system is XP home and I have 2 Maxtor HD's on the primary formatted NTFS.
    Master is a Maxtor 6Y080P0 and the slave is Maxtor 6Y200P0. I also have a
    Pioneer107 set as master and a Plexwriter CDRW set as the slave on the
    secondary channel. This system does not have a constant blinking HD LED. It
    only blinks when doing something. lol. Well you know what I mean......?

    When I experienced the constant HD LED blinking, my system was a 40GB
    samsung SP4002H formatted NTFS, XP Home, on the primary channel set as
    master with a samsung CDROM set as slave on the primary. It also had a
    Pioneer107 as master and a Plexwriter CDRW as slave on the secondary

    The guy who has reminded me of this problem, and who is having the HD LED
    problem is using XP Pro, 160 GB western digital formatted NTFS, set master
    on the primary with a CDRW as master on the secondary channel. He has
    disabled the indexing service, the autoplay (to stop XP from checking to see
    if there is a CD in the drive), and is using a custom page file. He also
    says his machine is free of virus's and trojans. As was mine when I had the
    blinking HD LED problem.

    Even though I don't have this LED issue, I am intrigued to find out what is
    causing it. What are these blinking systems doing what the non blinking
    system(s) are not doing? lol.

    Scotoma, Aug 9, 2004
  8. Bitstring <RKBRc.1805$>, from the
    if you ever find out let me know. I have systems built around Asus A7v,
    A7v133, Epox 8RDA+, and Asus A7N8X motherboards (all AMD CPUs though)
    and they =all= poll the EIDE controller and cause the light to flash
    (actually it seems to be slightly slower than 1/second). Always have,
    since they were first installed (all WinXP Pro, but IIRC win2k did the
    same thing).
    GSV Three Minds in a Can, Aug 9, 2004
  9. Scotoma

    Parish Guest

    All versions of NT do/did it and my all-SCSI system does it too (XP Pro).

    As for Scotoma not seeing this could it be that the LED in his case, or
    the electronics on his controller, aren't sensitive enough to turn the
    LED on and off so quickly? Is this likely? Electonics aren't my strong suit.

    Parish, Aug 9, 2004
  10. Scotoma

    Les Guest

    2 systems neither of which show the HD LED lighting up unless a drive is
    being accessed

    Gigabyte GA-K8VNXP and ASUS A7N8X
    Les, Aug 9, 2004
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