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Old Nov 4, 2012, 05:58 AM   #1
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Join Date: Nov 2012
Help! External HDD won't show up in Finder

Hello everyone,
I need some help regarding my WD external hard drive. It has been working fine up until today, when I plugged my brother's external hard drive into my macbook to copy some files. I dragged and dropped the files from his hard drive onto my external hard drive. After they had finished importing, my hard drive ejected itself and now won't show up on the desktop of my mac. It also does not show up in Disk Utilities.
The hardrive from which I copied the data has only ever been used on a windows machine prior to this. Could this be the cause?
Any help is much appreciated.
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Old Nov 4, 2012, 06:10 AM   #2
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Join Date: Nov 2010
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Does the problematic HDD show up in Windows or at least in Windows > Control Panel > Administrative Tools > Computer Management > Disk Management?
Have you tried an SMC reset on your Mac yet?
Intel-based Macs: Resetting the System Management Controller (SMC) (Apple Support Site)
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