I already have Ubuntu installed on the machine and a spare NTFS partition.
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1 Answer
If you just install Windows onto your new machine it will overwrite your bootloader, so you won't be able to boot into Ubuntu anymore. Generally it's better to first install Windows and then Ubuntu, as Ubuntu recognizes your Windows Installation and creates a Grub-Entry to start it.
However, this way around works too.
You will need some sort of Live-CD (Like the Ubuntu Install-CD). Boot it.
Mount your Ubuntu partition: (REPLACE X and Y)
sudo mount /dev/sdXY /mnt
sudo grub-install --root-directory=/mnt /dev/sdX
Now restart your computer. Grub should now load normally, without an entry for Windows. As soon as you are back into your system type
sudo update-grub
to add Windows to your bootmenu.
References:
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I wonder if it is not necessary to bind mount /dev, /proc and /sys to update-grub.– enzotibOct 8, 2010 at 12:33
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Check my reference, scroll up half a page. It looks like you only have to mount them when you have to grub-install, but that's not the case. – sBlatt 1 hour ago– sBlattOct 8, 2010 at 14:13