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Windows 7: How to install windows 7 x64 with dual boot?


21 May 2014   #1

Windows 7 Professional SP 1 x64
 
 
How to install windows 7 x64 with dual boot?

Hello,

I have
Windows xp x86 and Windows 7 x86 in dual boot. I have a 1 tb HDD which is partitioned into 6. XP is on C: while 7 is on M. Now i want to install windows 7 x 64 in place of XP. Can i just overwrite onto C:? If not what should be done? the x64 windows 7 is on a bootable usb.

Thank You


My System SpecsSystem Spec
.

21 May 2014   #2
Microsoft MVP

 

Windows 7 should always be on C when you boot it, unless is was incorrectly installed from an OS and not from a booted installer. So be sure to boot the flash stick to delete C, create and format a new partition there using the drive tools shown in Steps 7 and 8 of Clean Install Windows 7.

It should configure a Dual Boot with the other Windows 7 during install. If not install EasyBCD to add the other.

If you'd like to post back a screenshot of Disk Management - Post a Screen Capture Image
then we can advise you better and look it over for other potential problems or suggestions. Tell us what is on each partition.
My System SpecsSystem Spec
22 May 2014   #3

Windows 7 Professional SP 1 x64
 
 

Thanks for your reply Greg. Attached is my screenshot.How to install windows 7 x64 with dual boot?-capture.png. All help would be really appreciated. So can i just format C: and install using the bootable usb?


My System SpecsSystem Spec
.


22 May 2014   #4
Microsoft MVP

 

Yes delete the C partition during booted install to recreate/format as described earlier.

If you plan to get rid of the erroneously installed Windows 7 later then I would preformat C and mark it Active using Partition Wizard CD so it keeps its own boot files and doesn't place them on M. Otherwise we can help you move them later.
My System SpecsSystem Spec
23 May 2014   #5

Windows 7 Professional SP 1 x64
 
 

Greg, from your post i understand the following. is it correct?
1. Boot into windows 7 x86
2. Using partition wizard format C: and mark it active & primary
3. Log off windows 7 x86
4. Use bootable USB to install windows 7 x64 on C:
5. If dual boot does not appear install easy BCD.
My System SpecsSystem Spec
23 May 2014   #6
Microsoft MVP

 

You missed deleting C first before creating new NTFS primary partition to Modify>Set to Active.
My System SpecsSystem Spec
23 May 2014   #7

Windows 7 Professional SP 1 x64
 
 

Do you mean deleting C: as specified in Step 8 of Clean install of windows?
My System SpecsSystem Spec
23 May 2014   #8

Windows 7 Professional SP 1 x64
 
 

Hello Greg,

I installed x64. It went off smoothly. But i dont have the dual boot at the start. The computer directly boots into x64. What should i do?

Thank You
My System SpecsSystem Spec
23 May 2014   #9
Microsoft MVP

 

Ok that is to be expected since by marking the partition Active you restricted the boot files to the new install partition which didn't allow it to place them on the extant OS for a Dual Boot.

This is why the next step given is to install EasyBCD to add the old OS by drive letter and custom name to create your Boot Menu.
My System SpecsSystem Spec
23 May 2014   #10

Windows 7 Professional x64 Linux Mint 16
 
 

My System SpecsSystem Spec
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 How to install windows 7 x64 with dual boot?




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