Tom's Hardware > Forum > Windows 7 > [Solved] Can I dual boot Win7 32bit and 64 bit with the same SN#?

[Solved] Can I dual boot Win7 32bit and 64 bit with the same SN#?

Forum Windows 7 : [Solved] Can I dual boot Win7 32bit and 64 bit with the same SN#?

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Best answer from rambo117.

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Compulsive1   10-24-2009 at 07:25:36 AM

I got my Win7 upgrade to Vista 32 bit installed today- it came with both versions. Will MS let me register the 64bit version if it lives on the same machine with the same SN#? I guess I could try and find out- but wanted to ask before spending time partitioning drives and running the install.

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Best answer from rambo117

The_Prophecy wrote :

In reality, there's nothing stopping you from doing it, but technically you are only supposed to have either 32 or 64 bit installed on one PC at a time.


^yep, you can only go full 64 bit or full 32 bit.. not both though =[

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Silver Win 7 badge The_Prophecy   10-24-2009 at 07:35:38 AM

In reality, there's nothing stopping you from doing it, but technically you are only supposed to have either 32 or 64 bit installed on one PC at a time.

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Bronze Win 7 badge Jonmor68   10-24-2009 at 08:17:12 AM

If you are worried about something not working under 64 bit, why not keep the Vista 32 bit instaltion intact and install the W7 64 bit upgrade to a new partition.
You will need to use the Custom instalation for the 64 bit either way.

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rambo117   10-24-2009 at 07:41:58 PM
Best answer

The_Prophecy wrote :

In reality, there's nothing stopping you from doing it, but technically you are only supposed to have either 32 or 64 bit installed on one PC at a time.


^yep, you can only go full 64 bit or full 32 bit.. not both though =[

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Compulsive1   10-31-2009 at 03:16:29 AM

rambo117 wrote :

^yep, you can only go full 64 bit or full 32 bit.. not both though =[



I tried installing 64bit on a new partition, but after it went through set up and file copying phase, it re-booted right back into my 32 bit install without option for "select which OS would you like to boot"- it would not continue installation process.
There might be a hack, but it's not something Microsoft provides for "out of the box".

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