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Boot Camp: sees 64-bit Win 7 USB install as 32-bit, why??

1475 Views 6 Replies Latest reply: Mar 12, 2013 6:44 PM by Brian Mathias RSS
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Jan 12, 2013 7:02 PM

Attempting to use the Boot Camp Assistant on my new iMac 27 (late 2012) with a regular 1TB HDD.   I had boot camp create a install disk on a USB flash drive from an existing Windows 7 Pro 64-bit ISO... it's the same ISO I used to install 64-bit Win7 on a PC earlier.

 

After selecting/dividing partitions and clicking Install, I immediately get the error "Need 64-bit Windows installation USB drive or DVD".  Searched the discussion forums but kept reading about people using 32-bit ISO's, which isn't the problem.    Why isn't the 64-bit installer not being recognized as such?

iMac, OS X Mountain Lion (10.8.2), Windows 7 Pro 64-bit

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