Using the install CD to issue a
fixboot and a
recovery mode is a correct method. It is just the last part of removing anything related to a dual boot when a bootloader (
grub) was installed in a partition boot sector. It is not wrong or stupid to do this from within Windows.
Nevertheless... you can also do this from within Ubuntu before removing the partition. You can use
sudo fdisk -l
to find out your disc lay-out. Example:
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 19531775 9764864 83 Linux
/dev/sda2 19533822 234440703 107453441 5 Extended
/dev/sda5 19533824 39063551 9764864 82 Linux swap / Solaris
/dev/sda6 39065600 234440703 97687552 83 Linux
The one with the
grub (technically it could be any bootmanager). In the commands below you need to change
sda to your device (mostlikely it will be
sdb if you have a dual boot). In this case a...
dd if=/dev/null of=/dev/sda bs=446 count=1
grub. And to remove the partition table along with
grub you could also do a
dd if=/dev/null of=/dev/sda bs=512 count=1
I have seen people claim /dev/null should be /dev/zero but you understand that I am not going to issue these commands on my system ;-)
If you are unsure of any of these commands (I hardly expect a new user to understand these) the most logical method to me would be to use Windows recovery mode.
And to back this up with some examples: http://linux.koolsolutions.com/ has 3 methods to remove
grub. First 2 methods take the Windows approach and the third uses
dd.www.cyberciti.biz has 2 methods. First one is the Windows method and the second one uses
So assuming that when explaining something where there are more than 1 ways you would start with the easiest/best method I would claim most will use Windows recovery. And it is definitely not stupid but very smart to stick with commands you know. It is stupid to use commands you are hardly familiar with.