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my imac will not recognize my usb external harddrive anymore
- Thread starter marcel-v
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Try the drive with another mac or Take the drive out of the external casing and test it in another one.
Marcel - more detail please. It was working previously (we assume), so what might have changed? Is the ext USB drive externally powered? As suggested already, try the USB drive with another computer.
Absolutely, try and put it in another case. Most of the time it's the external casings that fail not the drives.