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Windows 7: Windows7 from XP Pro install query

07 Jan 2010   #1

Windows7 & XP Pro
Windows7 from XP Pro install query

I am trying to do a clean install Windows7 in place of an existing XP Pro operating system. I have followed Windows Easy - Transfer to & from Computers procedure. All backed up to external drive K - I have tried this once but for some reason instead of installing on the C drive it went to another drive D. I did not see during the installation and options saying the drive to install to. I expect I will need to format D to get rid of it. Having done that is it best to disconnect D so this does not happen again? Should I also switch off the external drive K till the installation is complete?

Help will be greatly appreciated.

My System SpecsSystem Spec

07 Jan 2010   #2


Was your OS installed to d: or is your file transfer defaulting to D: while your os is on the c: ?
My System SpecsSystem Spec
07 Jan 2010   #3

Windows7 & XP Pro

Thanks for quick reply.

XP is on the C Drive (marked as system) Windows7 is now on the second drive D

What's the quickest and best way to format the D drive, from "Computer Management" screen (Disc Management) it won't let me do a format, I get a Red Cross notification. Perhaps it's due to an operating system being installed.
My System SpecsSystem Spec

07 Jan 2010   #4

Windows7 & XP Pro

Sorry I did not say, it's still booting XP Pro from the C drive.
My System SpecsSystem Spec
07 Jan 2010   #5
Microsoft MVP


Can you please post back a screenshot of full Disk Management drive map so we can advise you better:

It may be as simple as unplugging D: to install Windows 7, then plugging back in D: to format using Disk Mgmt, or if necessary DISKPART commands from new Windows 7, or a 3rd party partition manager.
My System SpecsSystem Spec
08 Jan 2010   #6

Windows7 & XP Pro

I will do as you suggest, disconnect D, then do the installation of Windows 7 to the C drive followed by reconnection of the D drive then format it from Windows 7 - seems the best option.

Thanks for the help, will report back when done.
My System SpecsSystem Spec
08 Jan 2010   #7
Microsoft MVP


Good guide: Clean Install Windows 7

When you plug D: drive back in, if it causes problems with new C:Windows 7 booting, boot into Windows 7 DVD Repair console, open a Command Line and type:

SELECT DISK # (# for XP drive)

You can also run these commands as Admin from Windows 7 Command Prompt if Disk Mgmt won't delete D:
My System SpecsSystem Spec
15 Jan 2010   #8

Windows7 & XP Pro

Hi All, Job done Windows7 working great second drive reformatted and up and running, quite a simple task in the end. Thanks for all the great advice.
My System SpecsSystem Spec
15 Jan 2010   #9

Windows 7 x64

On your first install, did you boot to the Windows Install DVD? I have not seen a custom install where the option of where to place the install is not given.
My System SpecsSystem Spec
16 Jan 2010   #10

Windows7 & XP Pro

I know now that the option to select a drive was given. My problem was that when asked which drive to install to it was showing my drives as "0" & "1" so I assumed that 0 was my c drive and 1 was my d drive. In fact they were the wrong way around, so I installed to the incorrect drive.

Thanks to everyone for your help.
My System SpecsSystem Spec

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