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Windows 7: Installing Windows 7 alongside Windows 8

13 Dec 2012   #1
dimm0k

Windows 7 x64
 
 
Installing Windows 7 alongside Windows 8

So I purchased a new Thinkpad and had it pre-loaded with Windows 8. Now I regret that decision for many reasons and would like to install Windows 7 while keeping Windows 8 intact. The partition Windows 8 is sitting was quite large so I shrunk the volume via 'Disk Management' and allocated more than enough to run both operating systems in their own partition. Everything looked good from there and I was ready to proceed with the install of Windows 7 with the use of my DVD until it got to the section where setup asks which partition to install to. Choosing the empty NTFS partition setup gives me the following message and I can't proceed, "Windows cannot be installed to this disk. The selected disk is of the GPT partition style." Is there any easy way around this? I'm guessing this is because Windows 8 was installed via UEFI and GPT...


My System SpecsSystem Spec
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13 Dec 2012   #2
theog

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

You can install Windows 7 in dual boot first or second.
Follow Step one to five in this tutorial:
Downgrade Windows 8 to Windows 7

Than follow this tutorial:
Dual Boot Installation - Windows 8 and Windows 7 or Vista
My System SpecsSystem Spec
13 Dec 2012   #3
boyans

Win 8 RP, Win 7, XP
 
 

Try to boot installation DVD the EFI way - see options in firmware.

You boot installation media the EFI way - GPT disk is expected as target
or
you boot installation media BIOS/legacy way - MBR disk is expected as target.

NOTE:
a) Dual-boot setup for BIOS way is widely known and there are plenty of tutorials.
b) EFI dual-boot is new teritory - you cannot find many tutorials on the subject.

If you think you are technically advanced go for EFI/GPT - you have W8 already installed.
After you install W7 you will have to repair boot environment / reinstall W8 boot environment / and hopefully after that you will have a dual-boot menu.

Reinstalling boot environment is usually done with "bcdboot.exe" command - for EFI maybe one additional command is needed. Will post a link later on subject or just post the commands needed.
My System SpecsSystem Spec
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13 Dec 2012   #4
theog

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

Quote   Quote: Originally Posted by boyans View Post
After you install W7 you will have to repair boot environment / reinstall W8 boot environment / and hopefully after that you will have a dual-boot menu.

Reinstalling boot environment is usually done with "bcdboot.exe" command - for EFI maybe one additional command is needed. Will post a link later on subject or just post the commands needed.

NO, repairs are need.

Installing Windows 7 alongside Windows 8-delete-win-7-007.png


My System SpecsSystem Spec
13 Dec 2012   #5
boyans

Win 8 RP, Win 7, XP
 
 

Quote:
Quote: Originally Posted by boyans
After you install W7 you will have to repair boot environment / reinstall W8 boot environment / and hopefully after that you will have a dual-boot menu.

Reinstalling boot environment is usually done with "bcdboot.exe" command - for EFI maybe one additional command is needed. Will post a link later on subject or just post the commands needed.

NO, repairs are need.
Thanks, could you post an attachment of "bcdedit /enum all /v" corresponding to layout posted ?

Do I understand right the proposed solution (all EFI mode):
1) clean existing Win 8
2) install Win 7
3) install Win 8
or am I wrong ?
My System SpecsSystem Spec
13 Dec 2012   #6
theog

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

When Windows 8 is install first, than Windows 7.

Installing Windows 7 alongside Windows 8-use-4.png


When Windows 7 is install first, than Windows 8.

Installing Windows 7 alongside Windows 8-use-5.png


My System SpecsSystem Spec
13 Dec 2012   #7
boyans

Win 8 RP, Win 7, XP
 
 

Thank you for posting screenshots.
This does not answer completely the question.

Does it mean you install W7 after W8, both in EFI mode, and you can dual-boot without problems ?
My System SpecsSystem Spec
13 Dec 2012   #8
theog

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

When Windows 8 is install first, than Windows 7, both in EFI mode.
When Windows 7 is install first, than Windows 8, both in EFI mode.

& on new OEM PC with Windows 8, with Secure Boot disabled
My System SpecsSystem Spec
13 Dec 2012   #9
boyans

Win 8 RP, Win 7, XP
 
 

Ok. This is perfect.
No more dual-boot problems with newer Windows versions on UEFI.

Seems Microsoft has done a good implementation of UEFI loaders/boot managers.

Thank you.
My System SpecsSystem Spec
13 Dec 2012   #10
theog

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

Fedora to be signed by Microsoft | TechRepublic


Quote:
Fedora 18 will support UEFI’s Secure Boot feature by using Microsoft’s sysdev signing service, to sign its initial bootloader.
My System SpecsSystem Spec
Reply

 Installing Windows 7 alongside Windows 8




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