Question about Iomega 1TB Desktop USB 2.0 Hard Drive

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Iomega 500 gb external drive no longer mounts on mac os x tiger

I've been using this external drive for several months and have data backed up on it. So, one day the icon does not show up on my desktop at all. I tried using the disk utility but it does not show up on that either. Weird thing is that is shows up as a USB device in about this mac. It appears that the diagnostic capability of the computer recognizes it but I cannot access it to use the disk utility or access the files. What should I do?

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  • macgeek4evr Sep 24, 2009

    I will try all of these suggestions. Actually I have thought about removing the drive from the case and installing it inside my mac to at least access the data. Thanks for your help.

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Ok I have had probs like this before. try plugging it in to different usb ports. also try another cable is it usb? or fire wire? I have had issues with several items doing the same thing I just try different cables and different ports and keep un plugging and plugging it back in. usually either a dif port os cable solves the issue. also try connecting it to another pc and see if u can access it. If you can access it from aonther pc that you have in your home or access to all the time I can tell u how to have it hooked to that pc but be able to access it from the origional pc that you had it hooked to.

Posted on Sep 24, 2009

Testimonial: "I will try some of these suggestions. I've already tried hooking it up to a PC at work (unrecognized completely) and a mac powerbook - won't mount."

  • danielle yancer
    danielle yancer Sep 24, 2009

    if you are savy enough to hook it up inside your box then by all means do it

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I devised these simple steps that tend to remedy quite a few issues with most USB portable / external hard drives and OTHER devices (though not always)

A few things to check but assumes USB and Windows for other interfaces / operating systems (mac/ Linux) similar steps may be adapted to suit.

1. Ensure it is connected directly to the computer to a USB 2.0 port not a USB 1.0 port as this can have effects on performance and reliability

2. Use only the cables that came with it NOT one that fits that may have been lying around or is longer. Not all USB cables are equal even though they should be)

3. Do not connect through an external USB HUB unless that hub is USB 2.0 AND has its own power supply.

4. Use ONLY the power supply that came with it if it has an external power supply Don’t use any other unless you know it has both the same voltage and current rating e.g. 12V 500mA anything rated below that would not work properly.

5. Always use the same port for connecting your devices. Some devices do not like being switched about. If switched they may want to install software / drivers again. This can be especially true if you move a HUB to another port

If you checked and fixed anything there and still have issues then check your hardware from CONTROL PANEL / SYSTEM / HARDWARE.
Any exclamation marks by hardware need fixing before you investigate any further

USB flash drives can fail for no apparent reason.
Sandisk Cruzers are especially bad for this.

USB hard drives should be treated with extreme care.
This is a real hard drive ! and knocks and bumps can quite literally kill them.

It is possible to remove drives from the enclosures in most cases and connect directly inside a PC to fully check it.

Note that if you hear a drive clicking or pinging this could be the worst thing you would hear.
Known as "The Click Of Death"

If none of the above steps help look at updating the drivers from the manufacturers web site in the support section.

Posted on Sep 24, 2009

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Check this before you try to edit the registry values. 

http://developer.apple.com/documentation/Darwin/Reference/ManPages/man1/profiles.1.html

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And delete all references to the external hard drive.

And also HLKM\System\CurrentControlSet\Enum\USB

and found the keys associated with the USB to IDE value.

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