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How to check if Win 7 disk is 64bit and what version?

I burnt a copy of Windows 7 from my valid MSDN subscription, only thing is I forgot to label it. Now I would like to know if it is the 32Bit version or the 64Bit version.

Is there any way to tell what version of Windows 7 is installed on this DVD I burnt?

Thanks in advance.

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marked as duplicate by Ivo Flipse Sep 17 '10 at 12:56

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1 Answer 1

up vote 2 down vote accepted

Talking about Win7 Professional, my x64 version is about 3GB and my x86 version is about 2.3GB. The 64-bit version also has an additional file in the root of the DVD called bootmgr.efi.

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I confirm for bootmgr.efi –  Snark Mar 19 '10 at 17:25

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