Our imac cannot find the iomagic 250g hard drive. When the Apple Store plugs their hard drive in the our imac their hard drive appears. We've used the hard drive for a few years as the backup for the Mac Time Machine. We had it plugged into a power bar which we turned off at night, so sometimes this may have interrupted the backup. The hard drive has been making some strange noises lately when we turn on the power bar.
Clicking Hard drive When a hard disk makes a clicking sound and the computer does not detect it then the hard disk is faulty. This is commonly known as "The click of death".
There is no way of fixing this hard drive, if you need to recover your data, then there are companies that can recover data off faulty hard drives BUT it will cost you an arm and a leg for their services.
SOURCE: I turned the switch to the
I devised these simple steps that tend to remedy quite a few issues with most portable / external hard drives (though not always)
A few things to check but assumes USB and Windows for other interfaces / operating systems 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.
If you checked and fixed anything there and still have issues carry on reading.
Go to your control panel and then administrative tools, select Computer Management.
Now select Disk Management and expand the window.
Your drive should be listed here, if not then you need to check your computer hardware has not got any issues before proceeding.
If your drive is listed and says healthy then right click on it an select Properties, click Tools and then Error Checking, Check now, tick the two boxes and then Start.
This will attempt to fix most minor / common errors on the drive. It may also ask you to restart which is fine. Allow it to finish its work or you could corrupt the drive. If all went well you should be able to use it normally again.
If you drive was listed but did NOT say healthy then right click and select Format. Choose NTFS as the file system and do not tick any boxes you do NOT want quick format. Again start and let it do its thing. When it is done restart your computer and you should be good to go.
If you still have problems with the drive you might want to look at other areas.
A quick chck is to remove the drive and connect it direct to aPC with a suitable interface eg SATA or IDE.
If you can now see and use the drive it is the enclosure
Anything else and the drive may be dead
SOURCE: Computer is not recognizing my external hard drive
If the light won't blink, there could be problem with the power source. Do scanning hardisk for errors manually ( take off the hardisk from the case, assemble it on other PC Desktop)
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