Several but easiet is:
Click start, type MSCONFIG and hit <enter>. Click 'continue' when prompted.
Go to the boot tab, click on the listing for the former operating system and
then delete. Confirm and apply/ok. Once it is the only OS option, the system
should no longer pause on the boot selection menu.
These are also helpful apps to have if you run into other problems.
"Advanced settings include backing up and exporting your boot loader
configuration, making advanced "functional" changes like adding an operating
system to the boot menu..."
"EasyBCD is geared for users of all kinds. Whether you just want to add an
entry to your old XP partition ..."
"Davide" <email@example.com> wrote in message
> Hi, my actual config is the following:
> HD 1, C:, i got WinXP SP2. I have installed vista from XP into HD 2, G:
> Now, when i turn on the PC i can choose between Earlier OS and Windows
> VISTA. Now that Vista is my definitive OS i would like to format HD1 with
> XP and keep only HD2 with Vista. The problem is that if i format HD1 i
> will lose my boot info and VISTA won't start anymore. Is there a way to
> "move" the boot info from HD1 to HD2?