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Windows 7: How to detect if a Win7 install DVD contains 32bit or 64bit version?

07 Aug 2011   #1
pstein

win7pro 64bit
 
 
How to detect if a Win7 install DVD contains 32bit or 64bit version?

We have bought some month ago 32bit and 64bit versions of Win7.
From one of them we burned a backup DVD.

Now we need to re-install Win7 on a computer but we did not found the original DVDs. Fortunately we have the backup DVD available.

Is there a way to find out if it contains the 32 bit or 64bit version?
Of cause without trial and error by installing it. Just from inspecting the files.

We found no info/readme file on it which shows the version.

Peter


My System SpecsSystem Spec
.

07 Aug 2011   #2
zigzag3143

Win 8 Release candidate 8400
 
 

Quote   Quote: Originally Posted by pstein View Post
We have bought some month ago 32bit and 64bit versions of Win7.
From one of them we burned a backup DVD.

Now we need to re-install Win7 on a computer but we did not found the original DVDs. Fortunately we have the backup DVD available.

Is there a way to find out if it contains the 32 bit or 64bit version?
Of cause without trial and error by installing it. Just from inspecting the files.

We found no info/readme file on it which shows the version.

Peter
If it is the same as the original 32bit is about 2.5 gigs (the ISO) and 64 is a bit over 3 gigs.
My System SpecsSystem Spec
07 Aug 2011   #3
davehc
Microsoft MVP

Vista and now 7 in 32 and 64 bit.
 
 

Quick. The one with the largest contents is the 64 bit.
If you have lost the very expensive originals, I hope you have not lost the keys which came with them.
My System SpecsSystem Spec
.


07 Aug 2011   #4
pstein

win7pro 64bit
 
 

Quote   Quote: Originally Posted by davehc View Post
Quick. The one with the largest contents is the 64 bit.
If you have lost the very expensive originals, I hope you have not lost the keys which came with them.
Hmm, we have only ONE DVD and we cannot compare them with another or the originals.

Instead of calculating the DVD content size I would prefer to

- inspect the size of a certain core file or
- read an entry in an info text file content or
- view the 23th byte of file xxxxx.dll or
- call a certain setup.exe file with parameter -version
- or something similar.

Is there really no such inherent, fool proof solution?
My System SpecsSystem Spec
07 Aug 2011   #5
davehc
Microsoft MVP

Vista and now 7 in 32 and 64 bit.
 
 

Examine the root and open the autorun.inf file with notepad.
The 64 bit version shows:[AutoRun.Amd64]
open=setup.exe
icon=setup.exe,0

[AutoRun]
open=sources\sperr32.exe x64
icon=sources\sperr32.exe,0

The 32 bit version shows:[Autorun]
open=setup.exe
icon=setup.exe,0
My System SpecsSystem Spec
07 Aug 2011   #6
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate
 
 

Quote   Quote: Originally Posted by zigzag3143 View Post


If it is the same as the original 32bit is about 2.5 gigs (the ISO) and 64 is a bit over 3 gigs.
As said, it's simple, put the DVD in the CD/DVD drive and in "Computer" click properties and check the size(s) the larger is the 64-bit.
click to enlarge
How to detect if a Win7 install DVD contains 32bit or 64bit version?-size.jpg How to detect if a Win7 install DVD contains 32bit or 64bit version?-size2.jpg


My System SpecsSystem Spec
07 Aug 2011   #7
davehc
Microsoft MVP

Vista and now 7 in 32 and 64 bit.
 
 

Seems he does not have both on the one dvd, so nothing to compare.
My System SpecsSystem Spec
07 Aug 2011   #8
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate
 
 

He doesn't need to compare anything, look at the size in "Computer" is all that's needed, 32-bit is just over 2.5GB and the 64-bit is just over 3GB
My System SpecsSystem Spec
08 Aug 2011   #9
davehc
Microsoft MVP

Vista and now 7 in 32 and 64 bit.
 
 

I believe Zigzag has already suggested that.
My System SpecsSystem Spec
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 How to detect if a Win7 install DVD contains 32bit or 64bit version?




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