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How to change the timeout and default in the boot menu on a Windows/ Linux dual boot

The file you need to edit is /boot/grub/menu.lst and it contains lots of helpful comments. The two lines you’ll most likely need are:

timeout     10

which gives the timeout in seconds, and

default     0

which defines the default boot option, as the order of the item in the menu list, starting at 0. You can of course see the menu list when you boot, but it is also contained further down in the “menu.lst” file. Linux always keeps a few old kernels around to boot into when it updates the kernel, so your Windows entry will usually be the last in the list. If it is, for example, the fifth entry, you need to replace 0 with 4 (because we start counting at 0).

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