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Thread: Uninstall Ubuntu and GRUB by installing Windows 7?

  1. #1
    Join Date
    May 2009
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    1

    Uninstall Ubuntu and GRUB by installing Windows 7?

    I have my system set up to dual boot Ubuntu 9.10 Karmic Koala and Windows XP Pro, using GRUB 2 (1.97~beta4) as the boot loader. I want to remove Ubuntu and GRUB 2 from the system and install Windows 7 in a dual boot environment with Windows XP. My concern is to be sure that in the process of removing Ubuntu I do not make my system unbootable by removing or otherwise screwing up GRUB without replacing it with the Windows boot loader.

    I read a suggestion saying that the most straightforward way to do what I want is to simply install Windows 7 and, during the install process, select my current Ubuntu ext3 partition as the Windows 7 system partition. The suggestion said the Windows 7 install process would overwrite the MBR with the Windows boot loader, effectively “uninstalling” GRUB 2. The Windows boot loader will “find” the existing XP installation and give me a choice between Windows 7 and XP at boot time.

    Does that scenario sound right? Would it work the way I have described it? (I know I would no longer have Ubuntu. That is OK; I intend to reinstall it later.)

    For what it is worth, here is my current partition layout:

    /dev/hda - 320 GiB internal hard drive
    /dev/hda1 - 37.26 GiB ntfs boot (Windows XP)
    /dev/hda2 - 18.63 GiB ext3 (Ubuntu 9.10 /root)
    /dev/hda3 - 1.69 GiB linux-swap
    /dev/hda4 - 240.51 GiB extended
    7.84 MiB unallocated
    /dev/hda5 - 210.49 GiB ntfs (Windows XP “data”)
    /dev/hda6 - 30.01 GiB unknown (TrueCrypt encrypted device “unknown” to GParted)

  2. #2
    Join Date
    Mar 2010
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    134

    Re: Uninstall Ubuntu and GRUB by installing Windows 7?

    It worked fine when I tried windows 7 alongside xp. I did not have ubuntu on that pc, but if you reformat the partition that ubuntu and grub are sitting on, you should be fine.

  3. #3
    Join Date
    Apr 2010
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    44

    Re: Uninstall Ubuntu and GRUB by installing Windows 7?

    I think it should work fine, as you are over writing the GRUB, and no longer want ubuntu, it should not be any problem.

  4. #4
    Join Date
    May 2007
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    12,740

    Re: Uninstall Ubuntu and GRUB by installing Windows 7?

    Quote Originally Posted by roddhall View Post
    I have my system set up to dual boot Ubuntu 9.10 Karmic Koala and Windows XP Pro, using GRUB 2 (1.97~beta4) as the boot loader. I want to remove Ubuntu and GRUB 2 from the system and install Windows 7 in a dual boot environment with Windows XP. My concern is to be sure that in the process of removing Ubuntu I do not make my system unbootable by removing or otherwise screwing up GRUB without replacing it with the Windows boot loader.
    You will have no choice in the matter -- MS Windows OS installs ALWAYS overwrite the MBR, without asking. This will effective remove GRUB from your MBR (in a single-drive system).

    I read a suggestion saying that the most straightforward way to do what I want is to simply install Windows 7 and, during the install process, select my current Ubuntu ext3 partition as the Windows 7 system partition.
    Haven't actually tried it your way, but my guess is that since Win7 can't read Linux-formatted partitions, it won't even "see" the Ext3 partition. Safer approach would be to boot from a GParted LiveCD first, remove the Ext3 partition, and leave it as unallocated space. Win7 will see that.

    The suggestion said the Windows 7 install process would overwrite the MBR with the Windows boot loader, effectively “uninstalling” GRUB 2. The Windows boot loader will “find” the existing XP installation and give me a choice between Windows 7 and XP at boot time.
    See my first comment, and yes, it will create an OS selection menu that will include XP -- but it will not call it "XP".

    BTW, you will need to install Win7 in a Primary partition -- which it will create automatically if you select the unallocated space.
    Ubuntu 14.04, Mint 17; MS Win 8.1.
    Will not respond to PM requests for support -- use the forums.

  5. #5
    Join Date
    May 2010
    Beans
    76
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: Uninstall Ubuntu and GRUB by installing Windows 7?

    You shouldn't have any trouble. Windows is very good at annihilating every operating system it sees.

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