OEM Systems Ice Cube 3.5 inches FireWire External Hard Drive Enclosure (MT911FWHCL) Drive Case Logo

Question about OEM Systems Ice Cube 3.5 inches FireWire External Hard Drive Enclosure (MT911FWHCL) Drive Case

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Blue power light is flashing red and the hard drive won't mount

Hi there FYI- this site was one of the first to pop up when I started to search the web on this problem. I've never participated in a forum before so this is a bit new for me. Anyway, I was editing some video last night and all was well with the render/project files being saved to the external hard drive. After having shut down the G5 (PowerMac) at the end of the night, I forgot to power down the external drive, so it was left on all night (late night - no brains left). This morning after starting up the Mac, I noticed the external drive hadn't mounted on the desktop. I took a look and discovered that the blue power light was flashing red (intermittently between red and blue). I turned it off, removed the power supply and firewire plug, then reconnected them and turned it back on - the power light is still flashing red. We noticed that the fridge had reset itself overnight so I'm wondering if a power surge or temporary power failure may have caused this. We have a surge protector for our computer equipment. Any thoughts on what may have happened and what I can do next? Many thanks for this site and to anyone who responds - I hope I can be of help to someone else in the future.

Posted by Genevieve Ricci on

  • Genevieve Ricci Jan 11, 2007

    Hi again

    Problem solved. No more flashing power light, external drive has mounted and all the files are there - what a relief! I'm so grateful I didn't lose any information.

    I surfed the net for the power supply specs for a current model MacPower IceCube of similar size to mine. The Output on the power supply I was using was 12V/1.25A when it should have been 12V/3A (Australian specs).

    We had moved recently and all our power supplies for various pieces of equipment got mixed up. Not sure why the one I was using worked and then didn't work (maybe it was running at its limit and whatever happened last night pushed it over its limit), but I feel better now that I'm using what is probably the correct supply.

    Hope this helps anyone else having power supply issues with their external hard drive. Feel free to clarify my comments if you're an expert on the subject (as I am most definitely not!).


  • Genevieve Ricci Jan 12, 2007

    This is a message for tomj23 to say THANK YOU for responding so quickly. The answer you gave showed you took some time researching the problem and you also gave me an insight into how these things come together. You were so right in expressing the possibility of an undocumented error (most human errors are - I suppose the manufacturers can't think of everything!).

    So, it's all good and I really appreciate your effort.

    Enjoy the coming weekend (I think mine's coming a bit sooner than yours!)...



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Hi Vieve, The manual says nothing about flashing red and blue nor could I find anything of any real substance. Basically this thing is a box containing an IDE hard drive and some electronics that interfaces the drive with firewire, power distribution and a few other odds and ends. I suspect the board that contains the electronics may be damaged, however, its entirely possible that this may be some undocumented error that can be reset. I would try calling the vendors tech support, it?s at least worth a shot. If getting your data off is the concern it might be worth your time to buy another enclosure, install your drive and plug it into your Mac. There is a good chance your data is recoverable. Sorry I couldn?t get you a more definitive answer.

Posted on Jan 11, 2007

  • Anonymous Jan 11, 2007

    Looks like in the time it took me to write my non-answer you came up with your own, congratulations! Guess I should start refreshing the question page before I post ??..



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