The line timeout=10 causes GRUB to pause for 10 seconds before
booting the default partition. (That??™s how much time you have to press e if you want to edit the
boot line, or to press arrow keys to select a different operating system to boot.)
The splashimage line looks in the seventh partition on the first disk (hd0,6) for the boot partition
(in this case /dev/sda7, which is the /boot partition). GRUB loads splash.xpm.gz as the
image on the splash screen (/boot/grub/splash.xpm.gz). The splash screen appears as the
background of the boot screen.
GRUB indicates disk partitions using the following notation: (hd0,0). The first number
represents the disk, and the second is the partition on that disk. So, (hd0,1) is the second
partition (1) on the first disk (0).
The two bootable partitions in this example are Fedora and Windows XP. The title lines for each
of those partitions are followed by the name that appears on the boot screen to represent each
partition.
For the Fedora Linux system, the root line indicates the location of the boot partition as the second
partition on the first disk. So, to find the bootable kernel (vmlinuz-2.20-1.3104.fc7) and the
initrd initial RAM disk boot image that is loaded (initrd-2.6.20-1.3104.fc7.img), GRUB
looks in the root of hd0,6 (which is represented by /dev/sda7 and is eventually mounted as
/boot).
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