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Windows 7: Dual Boot Installation with Windows 7 and XP


28 Apr 2009   #1349
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 
Dual Boot Installation with Windows 7 and XP

How to Setup a Dual Boot Installation with Windows 7 and XP


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My System SpecsSystem Spec
03 Jul 2011   #1350
iamjaggernaut

Windows XP Professional SP3 32bit
 
 
Drive letter problem

Im running XP and want to install 7 in dual boot.

My problem:
Will installing 7 have drive letter complications and create problems for my already running XP windows? I have a whole bunch of stuff installed in XP and will be using XP as my default, only turning to 7 when i have directx 10 or directx 11 softwares/games.

I want my XP to be as it is after installing windows 7.
i will be using a seperate 100GB drive for 7.

Please help....

My System SpecsSystem Spec
03 Jul 2011   #1351
gregrocker
Microsoft MVP

 

Using separate HD's is the best way to dual boot:

Unplug the XP HD during Windows 7 install, set Windows 7 to boot first in BIOS setup.

After 7 install, plug back in XP and boot it using the one-time BIOS BOot Menu key given on first boot screen.

This keeps the OS HD's independent to come and go as you please, whereas leaving XP plugged in during Windows 7 install to configure a Windows-managed Dual Boot interlocks them requiring major surgery to remove XP later.
My System SpecsSystem Spec
03 Jul 2011   #1352
Jgalt

Windows 7 Home Premium 32bit
 
 

I figured it out! My dumb computer says that it is an X86. I got a notification today that my PC needed windows seven service pack 1. I Installed it and wouldn't you know, its not 32 bit! I don't know why it says X86 instead of X64 but it does. I actually took the advice of using the Virtual XP Mode and everything's working great. Thanks for the help and rapid response.
My System SpecsSystem Spec
14 Jul 2011   #1353
distrohopper

Windows 7 Professional X64
 
 

First I want to say how awesome this entire post and guide has been. It has saved me this week with installing XP 32bit and Windows 7 X64 in a RAID setup. Once I found the proper drivers for XP, NTlite and booting to install XP worked just fine, and using EasyBCD to restore the MBR worked like magic. I verified twice before handing the machine to the client - when booted into Windows 7, C: was Windows 7 and E: was XP, and on the XP side, C: was XP and D: was Windows 7.

However, I have run into an issue. Apparently the client now needs to install an application that must use the C: to install and now when you boot into XP, it shows the 100MB system folder as C: drive, the Windows 7 partition as drive D: and where XP is install as drive E:. On the Windows 7 side there is no real issue, Windows 7 is C: and E: is XP.
I need to be able to have XP as the C: when booted into XP.

Attached are screenshots of EasyBCD settings as well as the disk management from Windows 7 and the drive letters as seen in XP. Is there something I am missing or is this a pain to fix?

Thanks in advance!


Attached Thumbnails
Dual Boot Installation with Windows 7 and XP-disk_management.png  
Attached Images
    
My System SpecsSystem Spec
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14 Jul 2011   #1354
theog

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

Try removing the drive letter of System 100mb partition.
http://www.sevenforums.com/tutorials...ndows-7-a.html
My System SpecsSystem Spec
14 Jul 2011   #1355
gregrocker
Microsoft MVP

 

I do not know why a booted XP installer would not install itself as C unless you installed it to a Logical partition which couldn't host it's boot files so they were placed on the Windows 7 100mb System Reserved partition.

In any case I would remove the drive letter from 100mb in XP Disk Management so nothing will write to and corrupt it.
My System SpecsSystem Spec
14 Jul 2011   #1356
distrohopper

Windows 7 Professional X64
 
 

Quote   Quote: Originally Posted by theog View Post
Try removing the drive letter of System 100mb partition.
http://www.sevenforums.com/tutorials...ndows-7-a.html
I tried to do that from within XP as that is the only partition I see that 100MB system partition. I was unable to change the letter drive of that or of the E:. The error was along the lines of "unable to change the drive of boot partitions and/or system folders"."

Quote   Quote: Originally Posted by gregrocker View Post
I do not know why a booted XP installer would not install itself as C unless you installed it to a Logical partition which couldn't host it's boot files so they were placed on the Windows 7 100mb System Reserved partition.

In any case I would remove the drive letter from 100mb in XP Disk Management so nothing will write to and corrupt it.
Not sure why it did either. I did the install on Monday/Tuesday and I verified twice making sure the machine would boot into both OS's just fine and that there were no hickups. I saw that on Tuesday in XP, C: was the XP partition and D: was the Windows 7 partition. Somehow something 'broke.' And of course, the client's application MUST be installed in C: for some reason(can't choose which drive to install to...)
My System SpecsSystem Spec
14 Jul 2011   #1357
gregrocker
Microsoft MVP

 

Are you saying the XP drive letter changed? Because then it may change back. I'd boot into XP and remove the 100mb SysReserved drive letter to see if XP reverts after several reboots.

If not, Paragon Rescue CD is used specfically to change slipped drive letters however we've only ever used it when the OS isn't bootable because of it. Paragon Rescue -change drive letters

As a rule of thumb changing OS drive letters will otherwise always bork the installation.
My System SpecsSystem Spec
14 Jul 2011   #1358
distrohopper

Windows 7 Professional X64
 
 

I suppose I am saying the drive letters slipped and somehow changed(learn something new every day!). I'll try tomorrow and see if I can remove the 100MB system partition drive letter and see if that fixes this issue.

If not, I'll give that Paragon Rescue CD a go.

Thanks for the help and quick responses. I really appreciate it!
My System SpecsSystem Spec
14 Jul 2011   #1359
theog

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

Paragon would be the way to go, or major repairs.
My System SpecsSystem Spec
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