Why is my external HDD flashing continually ?

Discussion in 'Mac Accessories' started by babbler, Oct 31, 2006.

  1. babbler macrumors member

    Apr 15, 2006

    I have an ATMT 300Gb external drive with USB connection on my G4 powerbook. It is configured with two partitions; 1 is a bootable backup of my system disk maintained by daily backups with Silverkeeper software.

    Whenever it is attached, I can hear that it is constantly working and its activity light flashes continually. I can eject it without it complaining, but it starts humming again as soon as I reattach it. If I look at disk activity with activity monitor I see lots of write activity but little or no read activity. Does that refer to all disks on the system or just the internal drive ?

    Before I reformatted as Mac OS Extended (Journaled) and partitioned, it did not do this (it was a FAT32 drive). But my other Mac external disks don't behave like this.

    Any ideas before it grinds itself to oblivion?

  2. hodgjy macrumors 6502

    Apr 15, 2005
    How long does it "grind"?

    Are you running Tiger? It's possible that Spotlight is indexing your drive and you eject the drive before it's completed, so it has to start over the next time you mount it.
  3. techster85 macrumors regular

    Oct 17, 2006
    Lubbock, TX
    My Maxtor external (one touch 320 gig) does this too! It started while I was on a trip and doing some video editing. I think it got zapped by a power surge or something. It will mount, but it takes FOREVER and then when it does mount the light blinks constantly until my computer sleeps. It has given me problems ejecting because it is "in use."

    All that to say, I think my interface is going out, and your might be the same situation, you might try to pull the drive and use one of the usb interfaces from Newegg to test it.
  4. babbler thread starter macrumors member

    Apr 15, 2006
    It ground for many hours yesterday before I ejected it.

    Yes, I am running Tiger.

    You could be right about it being indexed by spotlight, I will let it grind on all day today and see if it sorts itself out.


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